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jQ插件--时间线插件和拖拽API

时间:2015-07-15 编辑:方方和圆圆 来源:CnBlogs

  这个时间轴是工作上用到的,自己写了一个, qq空间有时间轴的控件, 百度文库也有时间轴的控件;

  百度的时间轴大概是这样的:

  

  用户点击对应的锚链接,  那个三角会滚动, 然后左侧的界面也会滚动;

  实际的效果如下图,用户点击左侧的按钮或者右侧的input,滚动条都会主动滚动, 这里有个小技巧就是用after和before伪类生成三角形, 用户点击按钮的滚动效果直接用jq的animate方法:

  

  点击查看DEMO:打开

<!--
//设置内容;
window.onWebMessage( '{"type":"setItems","data":{"items":[{"name":1111},{"name":2222}]}}' ) ;

//设置内容, 对应的item对象如果active为true为激活态;
window.onWebMessage( '{"type":"setItems","data":{"items":[{"name":1000},{"name":1111},{"name":2222},{"name":3333,"active":true}]}}' ) ;

//设置某个第n个位置的item;
window.onWebMessage('{"type":"setItem","data":[2,{ "name" : "add-item"}]}');

//激活第三个锚链接为选中态;
window.onWebMessage( '{"type":"active","data":2}' )

//获取目前的数据:
window.onWebMessage( '{"type":"getItem"}' );
-->

<html>
    <head>
        <meta charset="utf-8" />
        <script src="http://cdn.bootCSS.com/jquery/2.1.4/jquery.JS"></script>
    </head>
    <style>
        /*初始的reset样式*/
        *{
            margin:0;
            padding:0;
        }
        .time-line-wrap{
            position: relative;
            width: 400px;
            margin:0 auto;
        }
        ul{
            list-style: none;
        }
        body,html{
            height: 100%;
        }
        body{
            -webkit-user-select: none;
            -moz-user-select: none;
            -ms-user-select: none;
            user-select: none;
        }


        /*样式开始*/
        .scroll-time-line{
            height:100%;
            overflow: hidden;
        }
        .time-line-wrap{
            position: relative;
        }
        .time-line-ul{
            position: relative;
        }
        /**
        时间轴的轴用伪类实现;
        */
        .time-line-ul::before{
            display: block;
            position:absolute;
            content:"";
            height:100%;
            width:1;
            left:27px;
            top:0;
            background: #eee;
        }
        .time-line-ul li{
            padding:14px;
            position: relative;
        }
        .time-line-ul input {
            vertical-align: super;
            border-radius: 4px;
            border:1px solid #eee;
            padding:4px;
            line-height: 22px;
            margin-left:10px;
        }
        /**
        使用after和before伪类实现input前面的三角形;
        */
        .time-line-ul li::before{
            position: absolute;
            content: "";
            display: block;
            top: 21px;
            left: 40px;
            width: 0px;
            height: 0px;
            border: 10px solid rgba(0, 0, 0, 0);
            border-right: 10px solid #EEE;
        }
        .time-line-ul li::after{
            position: absolute;
            content: "";
            display: block;
            top: 21px;
            left: 41px;
            width: 0px;
            height: 0px;
            border: 10px solid rgba(0, 0, 0, 0);
            border-right: 10px solid #fff;
        }
        /**
        默认时间轴锚链接的样式
        */
        .time-line-icon{
            width: 26px;
            height: 28px;
            display: inline-block;
            background: url(/article/UploadPic/2015-7/2015715153014779.png);
        }
        /**
        鼠标移动上来,或者锚链接有active时候的背景图样式
        */
        .time-line-icon.active,.time-line-icon:hover{
            background-position: 0px 28px;
        }
    </style>

    <!--模板,勿删!-->
    <script type="text/tempate" id="li-tpl">
        <% for(var i=0; i<items.length; i++ ) {%>
            <li class="li-<%=i%>">
                <a href="###" class="time-line-icon <% if(items[i].active){ %> <%="active"%> <%}%> "></a>
                <input type="text" value="<%=items[i].name%>"/>
            </li>
        <% } %>
    </script>

    <body>
        <!--
        滚动出现在这个div里面
        -->
        <div class="scroll-time-line">

            <!---
            时间轴相关的html结构
            -->
            <div class="time-line-wrap">
                <ul class="time-line-ul">
                    <li>
                        <a href="###" class="time-line-icon"></a> <input type="text" value="2015"/>
                    </li>
                    <li>
                        <a href="###" class="time-line-icon"></a> <input type="text" value="2015"/>
                    </li>
                    <li>
                        <a href="###" class="time-line-icon"></a> <input type="text" value="2015"/>
                    </li>
                    <li>
                        <a href="###" class="time-line-icon"></a> <input type="text" value="2015"/>
                    </li>
                    <li>
                        <a href="###" class="time-line-icon"></a> <input type="text" value="2015"/>
                    </li>
                    <li>
                        <a href="###" class="time-line-icon"></a> <input type="text" value="2015"/>
                    </li>
                    <li>
                        <a href="###" class="time-line-icon"></a> <input type="text" value="2015"/>
                    </li>
                    <li>
                        <a href="###" class="time-line-icon"></a> <input type="text" value="2015"/>
                    </li>
                    <li>
                        <a href="###" class="time-line-icon"></a> <input type="text" value="2015"/>
                    </li>
                    <li>
                        <a href="###" class="time-line-icon"></a> <input type="text" value="2015"/>
                    </li>
                    <li>
                        <a href="###" class="time-line-icon"></a> <input type="text" value="2015"/>
                    </li>
                    <li>
                        <a href="###" class="time-line-icon"></a> <input type="text" value="2015"/>
                    </li>
                    <li>
                        <a href="###" class="time-line-icon"></a> <input type="text" value="2015"/>
                    </li>
                    <li>
                        <a href="###" class="time-line-icon"></a> <input type="text" value="2015"/>
                    </li>
                    <li>
                        <a href="###" class="time-line-icon"></a> <input type="text" value="2015"/>
                    </li>
                    <li>
                        <a href="###" class="time-line-icon"></a> <input type="text" value="2015"/>
                    <li>
                        <a href="###" class="time-line-icon"></a> <input type="text" value="2015"/>
                    </li>
                    <li>
                        <a href="###" class="time-line-icon"></a> <input type="text" value="2015"/>
                    </li>
                    <li>
                        <a href="###" class="time-line-icon"></a> <input type="text" value="2015"/>
                    </li>
                    <li>
                        <a href="###" class="time-line-icon"></a> <input type="text" value="2015"/>
                    </li>
                    <li>
                        <a href="###" class="time-line-icon"></a> <input type="text" value="2015"/>
                    </li>
                </ul>
            </div>
            <!---
            时间轴相关的html结构结束
            -->
        </div>
        <script>
            //模板引擎的代码
            (function () {
                //underscore抄的模板引擎;
                var escaper = /\\|'|\r|\n|\t|\u2028|\u2029/g;

                var escapes = {
                    "'":      "'",
                    '\\':     '\\',
                    '\r':     'r',
                    '\n':     'n',
                    '\t':     't',
                    '\u2028': 'u2028',
                    '\u2029': 'u2029'
                };

                $.templateSettings = {
                    evaluate    : /<%([\s\S]+?)%>/g,
                    interpolate : /<%=([\s\S]+?)%>/g,
                    escape      : /<%-([\s\S]+?)%>/g
                }
                $.template = function(text, data, settings) {
                    var render;
                    settings = $.extend({}, settings, $.templateSettings);

                    // Combine delimiters into one regular expression via alternation.
                    var matcher = new RegExp([
                        (settings.escape || noMatch).source,
                        (settings.interpolate || noMatch).source,
                        (settings.evaluate || noMatch).source
                    ].join('|') + '|$', 'g');

                    // Compile the template source, escaping string literals appropriately.
                    var index = 0;
                    var source = "__p+='";
                    text.replace(matcher, function(match, escape, interpolate, evaluate, offset) {
                        source += text.slice(index, offset)
                                .replace(escaper, function(match) { return '\\' + escapes[match]; });

                        if (escape) {
                            source += "'+\n((__t=(" + escape + "))==null?'':_.escape(__t))+\n'";
                        }
                        if (interpolate) {
                            source += "'+\n((__t=(" + interpolate + "))==null?'':__t)+\n'";
                        }
                        if (evaluate) {
                            source += "';\n" + evaluate + "\n__p+='";
                        }
                        index = offset + match.length;
                        return match;
                    });
                    source += "';\n";

                    // If a variable is not specified, place data values in local scope.
                    if (!settings.variable) source = 'with(obj||{}){\n' + source + '}\n';

                    source = "var __t,__p='',__j=Array.prototype.join," +
                            "print=function(){__p+=__j.call(arguments,'');};\n" +
                            source + "return __p;\n";

                    try {
                        render = new Function(settings.variable || 'obj', '_', source);
                    } catch (e) {
                        e.source = source;
                        throw e;
                    }

                    if (data) return render(data, _);
                    var template = function(data) {
                        return render.call(this, data);
                    };

                    // Provide the compiled function source as a convenience for precompilation.
                    template.source = 'function(' + (settings.variable || 'obj') + '){\n' + source + '}';

                    return template;
                };
            })();

            (function( fn ) {

                $( fn.call( $ ,$) );

            })(function ($) {

                $.timeLineSetting = {
                    offsetTop : 100
                };
                $.extend($.fn, {
                    timeLine : function() {
                        $.each(this, function() {

                            var _this = this;

                            $(this).delegate(".time-line-ul>li", "click", function( ev ) {

                                $(".time-line-icon.active").removeClass("active");

                                $(this).find(".time-line-icon").addClass("active");

                                $(_this).animate({scrollTop: this.offsetTop - $.timeLineSetting.offsetTop},300);

                                ev.preventDefault();

                            });
                        });
                    }
                });
            });
            $(function() {
                var compile= $.template( $("#li-tpl").html() || "");

                //与客户端的交互事件;
                var orginalData = {};
                window.onWebMessage = function( msg ) {
                    msg = JSON.parse(msg);
                    switch( msg.type ) {
                        case "setItems" :
                            $(".time-line-ul").html( compile(msg.data) );
                            //结构化复制;
                            orginalData = JSON.parse(JSON.stringify(msg.data));
                            break;

                        case "setItem" :
                            orginalData.items&&orginalData.items.splice(msg.data[0],0,msg.data[1]);
                            $(".time-line-ul").html( compile(orginalData) );
                            break;

                        case "getItem" :
                                alert(JSON.stringify( orginalData ));
                            break;

                        case "active" :
                            $(".time-line-icon.active").removeClass("active");
                            $(".time-line-ul>li").eq( msg.data).find(".time-line-icon").addClass("active")
                            break;

                    };

                };

                //启用插件;
                $(".scroll-time-line").timeLine();
            })
        </script>
    </body>
</html>
View Code

   模板用了underscore,tempate方法挂到了$下, 作为$的工具方法(依赖于jQuery),模板的js代码直接放这里方便一些小项目直接用:

            //模板引擎的代码
            (function () {
                //underscore抄的模板引擎;
                var escaper = /\\|'|\r|\n|\t|\u2028|\u2029/g;

                var escapes = {
                    "'":      "'",
                    '\\':     '\\',
                    '\r':     'r',
                    '\n':     'n',
                    '\t':     't',
                    '\u2028': 'u2028',
                    '\u2029': 'u2029'
                };

                $.templateSettings = {
                    evaluate    : /<%([\s\S]+?)%>/g,
                    interpolate : /<%=([\s\S]+?)%>/g,
                    escape      : /<%-([\s\S]+?)%>/g
                }
                $.template = function(text, data, settings) {
                    var render;
                    settings = $.extend({}, settings, $.templateSettings);

                    // Combine delimiters into one regular expression via alternation.
                    var matcher = new RegExp([
                        (settings.escape || noMatch).source,
                        (settings.interpolate || noMatch).source,
                        (settings.evaluate || noMatch).source
                    ].join('|') + '|$', 'g');

                    // Compile the template source, escaping string literals appropriately.
                    var index = 0;
                    var source = "__p+='";
                    text.replace(matcher, function(match, escape, interpolate, evaluate, offset) {
                        source += text.slice(index, offset)
                                .replace(escaper, function(match) { return '\\' + escapes[match]; });

                        if (escape) {
                            source += "'+\n((__t=(" + escape + "))==null?'':_.escape(__t))+\n'";
                        }
                        if (interpolate) {
                            source += "'+\n((__t=(" + interpolate + "))==null?'':__t)+\n'";
                        }
                        if (evaluate) {
                            source += "';\n" + evaluate + "\n__p+='";
                        }
                        index = offset + match.length;
                        return match;
                    });
                    source += "';\n";

                    // If a variable is not specified, place data values in local scope.
                    if (!settings.variable) source = 'with(obj||{}){\n' + source + '}\n';

                    source = "var __t,__p='',__j=Array.prototype.join," +
                            "print=function(){__p+=__j.call(arguments,'');};\n" +
                            source + "return __p;\n";

                    try {
                        render = new Function(settings.variable || 'obj', '_', source);
                    } catch (e) {
                        e.source = source;
                        throw e;
                    }

                    if (data) return render(data, _);
                    var template = function(data) {
                        return render.call(this, data);
                    };

                    // Provide the compiled function source as a convenience for precompilation.
                    template.source = 'function(' + (settings.variable || 'obj') + '){\n' + source + '}';

                    return template;
                };
            })();
View Code

  

  模板的使用的DEMO如下, 也可以参考官方的文档:http://underscorejs.org/#template:

<html>
    <head>
        <body>
            <script src="http://cdn.bootcss.com/jquery/2.1.4/jquery.js"></script>
            <script>
            //模板引擎的代码
            (function () {
                //underscore抄的模板引擎;
                var escaper = /\\|'|\r|\n|\t|\u2028|\u2029/g;

                var escapes = {
                    "'":      "'",
                    '\\':     '\\',
                    '\r':     'r',
                    '\n':     'n',
                    '\t':     't',
                    '\u2028': 'u2028',
                    '\u2029': 'u2029'
                };

                $.templateSettings = {
                    evaluate    : /<%([\s\S]+?)%>/g,
                    interpolate : /<%=([\s\S]+?)%>/g,
                    escape      : /<%-([\s\S]+?)%>/g
                }
                $.template = function(text, data, settings) {
                    var render;
                    settings = $.extend({}, settings, $.templateSettings);

                    // Combine delimiters into one regular expression via alternation.
                    var matcher = new RegExp([
                        (settings.escape || noMatch).source,
                        (settings.interpolate || noMatch).source,
                        (settings.evaluate || noMatch).source
                    ].join('|') + '|$', 'g');

                    // Compile the template source, escaping string literals appropriately.
                    var index = 0;
                    var source = "__p+='";
                    text.replace(matcher, function(match, escape, interpolate, evaluate, offset) {
                        source += text.slice(index, offset)
                                .replace(escaper, function(match) { return '\\' + escapes[match]; });

                        if (escape) {
                            source += "'+\n((__t=(" + escape + "))==null?'':_.escape(__t))+\n'";
                        }
                        if (interpolate) {
                            source += "'+\n((__t=(" + interpolate + "))==null?'':__t)+\n'";
                        }
                        if (evaluate) {
                            source += "';\n" + evaluate + "\n__p+='";
                        }
                        index = offset + match.length;
                        return match;
                    });
                    source += "';\n";

                    // If a variable is not specified, place data values in local scope.
                    if (!settings.variable) source = 'with(obj||{}){\n' + source + '}\n';

                    source = "var __t,__p='',__j=Array.prototype.join," +
                            "print=function(){__p+=__j.call(arguments,'');};\n" +
                            source + "return __p;\n";

                    try {
                        render = new Function(settings.variable || 'obj', '_', source);
                    } catch (e) {
                        e.source = source;
                        throw e;
                    }

                    if (data) return render(data, _);
                    var template = function(data) {
                        return render.call(this, data);
                    };

                    // Provide the compiled function source as a convenience for precompilation.
                    template.source = 'function(' + (settings.variable || 'obj') + '){\n' + source + '}';

                    return template;
                };
            })();
            </script>
            <script>
            //会输出 <div>haahah</div>;
            console.log( $.template('<div><%=data%></div>')( {data:"haahah"} ) );
            </script>
        </body>
    </head>
</html>

  修改了时间轴的样式, 又为这个插件添加了拖拽的方法,代码一下变得好乱, 顺便普及一下拖拽的事件, ondrop, ondragover,ondrag, 如果要让元素可以拖拽, 就要为要拖拽的元素添加draggable="true",   元素可以拖拽以后 , 要为可以拖放到的的DIV或者其他块元素,绑定一个dragover方法, 这个方法就做一件事, ev.preventDefault(), 看代码撒:

<!DOCTYPE HTML>
<html>
<head>
    <meta charset="utf-8"/>
    <style type="text/css">
        #div1 {width:488px;height:70px;padding:10px;border:1px solid #aaaaaa;}
    </style>
    <script type="text/javascript">
        //当元素dragover时候一定要阻止默认事件, 否则把当前拖拽的元素就无法drop;
        function dragover(ev)
        {
            console.log(ev);
            ev.preventDefault();
        }

        //对于拖拽事件最重要的一个事件属性就是dataTransfer;
        function drag(ev)
        {
            console.log(ev);
            ev.dataTransfer.setData("Text",ev.target.id);
        }

        function drop(ev)
        {
            console.log(ev);
            var data=ev.dataTransfer.getData("Text");
            ev.target.appendChild(document.getElementById(data));
        }
    </script>
</head>
<body>

<p>请把图片拖放到矩形中:</p>

<div id="div1" ondrop="drop(event)" ondragover="dragover(event)"></div>
<br />
<img id="drag1" src="/article/UploadPic/2015-7/2015715153015864.gif" draggable="true" ondragstart="drag(event)" />

</body>
</html>
View Code

  另外一个DEMO:

<!DOCTYPE HTML>
<html>
<head>
    <meta charset="utf-8"/>
    <style type="text/css">
    </style>
</head>
<body>
    <p>What fruits do you like?</p>
    <ol ondragstart="dragStartHandler(event)">
        <li draggable="true" data-value="fruit-apple">Apples</li>
        <li draggable="true" data-value="fruit-orange">Oranges</li>
        <li draggable="true" data-value="fruit-pear">Pears</li>
    </ol>
    <script>
        var internalDNDType = 'text/x-example'; // set this to something specific to your site
        function dragStartHandler(event) {
            if (event.target instanceof HTMLLIElement) {
                // use the element's data-value="" attribute as the value to be moving:
                event.dataTransfer.setData(internalDNDType, event.target.dataset.value);
                event.dataTransfer.effectAllowed = 'move'; // only allow moves
            } else {
                event.preventDefault(); // don't allow selection to be dragged
            }
        }
    </script>

    <p>Drop your favorite fruits below:</p>
    <ol ondrop="dropHandler(event)" ondragover="dragover(event)">
        <!-- don't forget to change the "text/x-example" type to something
        specific to your site -->
        <li>drop</li>
    </ol>
    <script>
        var internalDNDType = 'text/x-example'; // set this to something specific to your site
        function dropHandler(event) {
            var li = document.createElement('li');
            var data = event.dataTransfer.getData(internalDNDType);
            if (data == 'fruit-apple') {
                li.textContent = 'Apples';
            } else if (data == 'fruit-orange') {
                li.textContent = 'Oranges';
            } else if (data == 'fruit-pear') {
                li.textContent = 'Pears';
            } else {
                li.textContent = 'Unknown Fruit';
            }
            event.target.appendChild(li);
        };
        function dragover(ev) {
            ev.preventDefault();
        };
    </script>
</body>
</html>
View Code

   HTML5的拖拽提供了 setDragImage ,  effectAllowed , setData.... 等很多便捷的方法给开发者,  通过FileReader读取File, 然后就可以用ajax与后台进行交互, 和前端DOM操作:

<!DOCTYPE HTML>
<html>
<head>
    <meta charset="utf-8"/>
    <style type="text/css">
    </style>
</head>
<body>
    <div id="div0" ondragover="dragover(event)" ondrop="drop(event)">
        drop拖放文件进来
    </div>
    <script>
        function dragover(ev) {
            ev.preventDefault();
        };
        function drop(ev) {
            var reader = new FileReader();
            reader.onload = function ( ev ) {
                var oDiv = document.createElement("div");
                oDiv.innerHTML = ev.target.result;
                document.body.appendChild( oDiv );
            };
            reader.readAsText( ev.dataTransfer.files[0] );
            ev.preventDefault();
        }
    </script>
</body>
</html>

  插件效果图:

  最后完成的插件代码:

<!--
//设置内容;
window.onWebMessage( '{"type":"setItems","data":{"items":[{"name":1111,"type":"doc"},{"name":2222,"type":"doc"}]}}' ) ;

window.onWebMessage( '{"type":"setItems","data":{"items":[{"name":"文档类型","type":"doc"},{"name":"音频类型","type":"audio","active":true},{"name":"视频类型","type":"video"},{"name":"单元测试","type":"test"},{"name":"图片类型","type":"pic"}]}}' ) ;

//设置内容, 对应的item对象如果active为true为激活态;
window.onWebMessage( '{"type":"setItems","data":{"items":[{"name":1111,"type":"doc"},{"name":2222,"type":"doc","active":true}]}}' ) ;

//设置某个第n个位置的item;
window.onWebMessage('{"type":"setItem","data":[2,{ "name" : "add-item", "type":"doc"}]}');

//激活第三个锚链接为选中态;
window.onWebMessage( '{"type":"active","data":2}' )

//获取目前的数据:
window.onWebMessage( '{"type":"getItem"}' )
-->

<html>
    <head>
        <meta charset="utf-8" />
        <script src="http://cdn.bootcss.com/jquery/2.1.4/jquery.js"></script>
    </head>
    <style>
        /*初始的reset样式*/
        *{
            margin:0;
            padding:0;
        }
        .time-line-wrap{
            position: relative;
            width: 400px;
            margin:0 auto;
        }
        ul{
            list-style: none;
        }
        body,html{
            height: 100%;
        }
        body{
            background:#303030;
            -webkit-user-select: none;
            -moz-user-select: none;
            -ms-user-select: none;
            user-select: none;
        }


        /*样式开始*/
        .scroll-time-line{
            height:100%;
            overflow: hidden;
        }
        .time-line-wrap{
            position: relative;
        }
        .time-line-wrap::before{
            display: block;
            content: "";
            position: absolute;
            border: 2px solid #616161;
            width: 7px;
            background: #303030;
            height: 7px;
            z-index: 2;
            border-radius: 100%;
            left: 12px;
            top: 0;
        }
        .time-line-wrap::after{
            display: block;
            content: "";
            position: absolute;
            border: 2px solid #616161;
            width: 7px;
            background: #303030;
            height: 7px;
            z-index: 2;
            border-radius: 100%;
            left: 12px;
            bottom:0;
        }
        .time-line-ul{
            position: relative;
        }
        /**
        时间轴的轴用伪类实现;
        */
        .time-line-ul::before{
            display: block;
            position:absolute;
            content:"";
            height:100%;
            width:1px;
            left:17px;
            top:0;
            background: #616161;
        }

        .time-line-ul li{
            padding: 14px;
            position: relative;
            color: #FFF;
            height: 26px;
        }
        .time-line-ul li>* {
            vertical-align: middle;
            display: inline-block;
        }

        /**
        为了更好的维护hover的样式, 背景图片通过js进行管理
        hover start;
        */
        .time-line-ul li b{
            width: 32px;
            height: 32px;
        }
        .time-line-ul li b.active{
            display: none;
        }
        .time-line-ul li:hover b{
            display: none;
        }
        .time-line-ul li:hover  .active{
            display: inline-block;
        }
        /**
            当li被点击的时候添加的类,优先级
        */
        .time-line-ul li b.show{
            display: none;
        }
        .time-line-ul li b.active.show{
            display: inline-block;
        }
        /**
        hover end
        */

        .time-line-ul li span{
            display: inline-block;
            white-space: nowrap;
            word-wrap: normal;
            width: 100px;
            text-overflow: ellipsis;
            overflow: hidden;
        }
        /**
        当拖拽LI到某个LI上面,这个LI变透明
        */
        .over{
            opacity: 0.4;
        }
        /**
        占位DIV;
        */
        .blank{
            display: block;
            height:50px;
            line-height: 50px;
        }

        /**
        默认时间轴锚链接的样式
        */
        .time-line-icon{
            width: 7px;
            height: 7px;
            display: inline-block;
            background: #616161;
            border-radius: 100%;
        }
        /**
        鼠标移动上来,或者锚链接有active时候的背景图样式
        */
        .time-line-icon.active,.time-line-icon:hover{
            background: #fff;
        }
    </style>

    <!--模板,勿删!-->
    <script type="text/tempate" id="li-tpl">
        <% for(var i=0; i<items.length; i++ ) {%>
            <li class="li-<%=i%>" draggable="true">
                <a href="###" class="time-line-icon <% if(items[i].active){ %> <%="active"%> <%}%> "></a>
                <b class="">
                    <img src="http://www.cnblogs.com/diligenceday/p/imgs/<%=items[i].type%>.png" />
                </b>
                <b class="active">
                    <img src="http://www.cnblogs.com/diligenceday/p/imgs/<%=items[i].type%>1.png" />
                </b>
                <span>
                    <%=items[i].name%>
                </span>
            </li>
        <% } %>
    </script>

    <body>
        <!--
        滚动出现在这个div里面
        -->
        <div class="scroll-time-line">

            <!---
            时间轴相关的html结构
            -->
            <div class="time-line-wrap">
                <ul class="time-line-ul">

                    <!----假数据--->
                    <li class="li-0" draggable="true">
                        <a href="###" class="time-line-icon  "></a>
                        <b class="">
                            <img src="http://www.cnblogs.com/diligenceday/p/imgs/doc.png">
                        </b>
                        <b class="active">
                            <img src="http://www.cnblogs.com/diligenceday/p/imgs/doc1.png">
                        </b>
                        <span>
                            文档类型
                        </span>
                    </li>

                    <li class="li-2" draggable="true">
                        <a href="###" class="time-line-icon  "></a>
                        <b class="">
                            <img src="http://www.cnblogs.com/diligenceday/p/imgs/video.png">
                        </b>
                        <b class="active">
                            <img src="http://www.cnblogs.com/diligenceday/p/imgs/video1.png">
                        </b>
                        <span>
                            视频类型
                        </span>
                    </li>



                    <li class="li-3" draggable="true">
                        <a href="###" class="time-line-icon  "></a>
                        <b class="">
                            <img src="http://www.cnblogs.com/diligenceday/p/imgs/test.png">
                        </b>
                        <b class="active">
                            <img src="http://www.cnblogs.com/diligenceday/p/imgs/test1.png">
                        </b>
                        <span>
                            单元测试
                        </span>
                    </li><li class="li-1" draggable="true">
                    <a href="###" class="time-line-icon  active  "></a>
                    <b class="">
                        <img src="http://www.cnblogs.com/diligenceday/p/imgs/audio.png">
                    </b>
                    <b class="active">
                        <img src="http://www.cnblogs.com/diligenceday/p/imgs/audio1.png">
                    </b>
                    <span>
                        音频类型
                    </span>
                </li>

                    <li class="li-4" draggable="true">
                        <a href="###" class="time-line-icon  "></a>
                        <b class="">
                            <img src="http://www.cnblogs.com/diligenceday/p/imgs/pic.png">
                        </b>
                        <b class="active">
                            <img src="http://www.cnblogs.com/diligenceday/p/imgs/pic1.png">
                        </b>
                    <span>
                        图片类型
                    </span>
                    </li>

                    <li class="li-0" draggable="true">
                        <a href="###" class="time-line-icon  "></a>
                        <b class="">
                            <img src="http://www.cnblogs.com/diligenceday/p/imgs/doc.png">
                        </b>
                        <b class="active">
                            <img src="http://www.cnblogs.com/diligenceday/p/imgs/doc1.png">
                        </b>
                        <span>
                            文档类型
                        </span>
                    </li>

                    <li class="li-2" draggable="true">
                        <a href="###" class="time-line-icon  "></a>
                        <b class="">
                            <img src="http://www.cnblogs.com/diligenceday/p/imgs/video.png">
                        </b>
                        <b class="active">
                            <img src="http://www.cnblogs.com/diligenceday/p/imgs/video1.png">
                        </b>
                        <span>
                            视频类型
                        </span>
                    </li>



                    <li class="li-3" draggable="true">
                        <a href="###" class="time-line-icon  "></a>
                        <b class="">
                            <img src="http://www.cnblogs.com/diligenceday/p/imgs/test.png">
                        </b>
                        <b class="active">
                            <img src="http://www.cnblogs.com/diligenceday/p/imgs/test1.png">
                        </b>
                        <span>
                            单元测试
                        </span>
                    </li><li class="li-1" draggable="true">
                    <a href="###" class="time-line-icon  active  "></a>
                    <b class="">
                        <img src="http://www.cnblogs.com/diligenceday/p/imgs/audio.png">
                    </b>
                    <b class="active">
                        <img src="http://www.cnblogs.com/diligenceday/p/imgs/audio1.png">
                    </b>
                    <span>
                        音频类型
                    </span>
                </li>

                    <li class="li-4" draggable="true">
                        <a href="###" class="time-line-icon  "></a>
                        <b class="">
                            <img src="http://www.cnblogs.com/diligenceday/p/imgs/pic.png">
                        </b>
                        <b class="active">
                            <img src="http://www.cnblogs.com/diligenceday/p/imgs/pic1.png">
                        </b>
                        <span>
                            图片类型
                        </span>
                    </li>

                    <li class="li-0" draggable="true">
                        <a href="###" class="time-line-icon  "></a>
                        <b class="">
                            <img src="http://www.cnblogs.com/diligenceday/p/imgs/doc.png">
                        </b>
                        <b class="active">
                            <img src="http://www.cnblogs.com/diligenceday/p/imgs/doc1.png">
                        </b>
                        <span>
                            文档类型
                        </span>
                    </li>

                    <li class="li-2" draggable="true">
                        <a href="###" class="time-line-icon  "></a>
                        <b class="">
                            <img src="http://www.cnblogs.com/diligenceday/p/imgs/video.png">
                        </b>
                        <b class="active">
                            <img src="http://www.cnblogs.com/diligenceday/p/imgs/video1.png">
                        </b>
                        <span>
                            视频类型
                        </span>
                    </li>



                    <li class="li-3" draggable="true">
                        <a href="###" class="time-line-icon  "></a>
                        <b class="">
                            <img src="http://www.cnblogs.com/diligenceday/p/imgs/test.png">
                        </b>
                        <b class="active">
                            <img src="http://www.cnblogs.com/diligenceday/p/imgs/test1.png">
                        </b>
                        <span>
                            单元测试
                        </span>
                    </li><li class="li-1" draggable="true">
                    <a href="###" class="time-line-icon  active  "></a>
                    <b class="">
                        <img src="http://www.cnblogs.com/diligenceday/p/imgs/audio.png">
                    </b>
                    <b class="active">
                        <img src="http://www.cnblogs.com/diligenceday/p/imgs/audio1.png">
                    </b>
                    <span>
                        音频类型
                    </span>
                </li>

                    <li class="li-4" draggable="true">
                        <a href="###" class="time-line-icon  "></a>
                        <b class="">
                            <img src="http://www.cnblogs.com/diligenceday/p/imgs/pic.png">
                        </b>
                        <b class="active">
                            <img src="http://www.cnblogs.com/diligenceday/p/imgs/pic1.png">
                        </b>
                        <span>
                            图片类型
                        </span>
                    </li>

                    <li class="li-0" draggable="true">
                        <a href="###" class="time-line-icon  "></a>
                        <b class="">
                            <img src="http://www.cnblogs.com/diligenceday/p/imgs/doc.png">
                        </b>
                        <b class="active">
                            <img src="http://www.cnblogs.com/diligenceday/p/imgs/doc1.png">
                        </b>
                        <span>
                            文档类型
                        </span>
                    </li>

                    <li class="li-2" draggable="true">
                        <a href="###" class="time-line-icon  "></a>
                        <b class="">
                            <img src="http://www.cnblogs.com/diligenceday/p/imgs/video.png">
                        </b>
                        <b class="active">
                            <img src="http://www.cnblogs.com/diligenceday/p/imgs/video1.png">
                        </b>
                        <span>
                            视频类型
                        </span>
                    </li>



                    <li class="li-3" draggable="true">
                        <a href="###" class="time-line-icon  "></a>
                        <b class="">
                            <img src="http://www.cnblogs.com/diligenceday/p/imgs/test.png">
                        </b>
                        <b class="active">
                            <img src="http://www.cnblogs.com/diligenceday/p/imgs/test1.png">
                        </b>
                        <span>
                            单元测试
                        </span>
                    </li><li class="li-1" draggable="true">
                        <a href="###" class="time-line-icon  active  "></a>
                        <b class="">
                            <img src="http://www.cnblogs.com/diligenceday/p/imgs/audio.png">
                        </b>
                        <b class="active">
                            <img src="http://www.cnblogs.com/diligenceday/p/imgs/audio1.png">
                        </b>
                        <span>
                            音频类型
                        </span>
                    </li>

                    <li class="li-4" draggable="true">
                        <a href="###" class="time-line-icon  "></a>
                        <b class="">
                            <img src="http://www.cnblogs.com/diligenceday/p/imgs/pic.png">
                        </b>
                        <b class="active">
                            <img src="http://www.cnblogs.com/diligenceday/p/imgs/pic1.png">
                        </b>
                        <span>
                            图片类型
                        </span>
                    </li>

                    <li class="li-0" draggable="true">
                        <a href="###" class="time-line-icon  "></a>
                        <b class="">
                            <img src="http://www.cnblogs.com/diligenceday/p/imgs/doc.png">
                        </b>
                        <b class="active">
                            <img src="http://www.cnblogs.com/diligenceday/p/imgs/doc1.png">
                        </b>
                        <span>
                            文档类型
                        </span>
                    </li>

                    <li class="li-2" draggable="true">
                        <a href="###" class="time-line-icon  "></a>
                        <b class="">
                            <img src="http://www.cnblogs.com/diligenceday/p/imgs/video.png">
                        </b>
                        <b class="active">
                            <img src="http://www.cnblogs.com/diligenceday/p/imgs/video1.png">
                        </b>
                        <span>
                            视频类型
                        </span>
                    </li>



                    <!---假数据end--->

                </ul>
            </div>
            <!---
            时间轴相关的html结构结束
            -->
        </div>
        <script>
            //模板引擎的代码
            (function () {
                //underscore抄的模板引擎;
                var escaper = /\\|'|\r|\n|\t|\u2028|\u2029/g;

                var escapes = {
                    "'":      "'",
                    '\\':     '\\',
                    '\r':     'r',
                    '\n':     'n',
                    '\t':     't',
                    '\u2028': 'u2028',
                    '\u2029': 'u2029'
                };

                $.templateSettings = {
                    evaluate    : /<%([\s\S]+?)%>/g,
                    interpolate : /<%=([\s\S]+?)%>/g,
                    escape      : /<%-([\s\S]+?)%>/g
                }
                $.template = function(text, data, settings) {
                    var render;
                    settings = $.extend({}, settings, $.templateSettings);

                    // Combine delimiters into one regular expression via alternation.
                    var matcher = new RegExp([
                        (settings.escape || noMatch).source,
                        (settings.interpolate || noMatch).source,
                        (settings.evaluate || noMatch).source
                    ].join('|') + '|$', 'g');

                    // Compile the template source, escaping string literals appropriately.
                    var index = 0;
                    var source = "__p+='";
                    text.replace(matcher, function(match, escape, interpolate, evaluate, offset) {
                        source += text.slice(index, offset)
                                .replace(escaper, function(match) { return '\\' + escapes[match]; });

                        if (escape) {
                            source += "'+\n((__t=(" + escape + "))==null?'':_.escape(__t))+\n'";
                        }
                        if (interpolate) {
                            source += "'+\n((__t=(" + interpolate + "))==null?'':__t)+\n'";
                        }
                        if (evaluate) {
                            source += "';\n" + evaluate + "\n__p+='";
                        }
                        index = offset + match.length;
                        return match;
                    });
                    source += "';\n";

                    // If a variable is not specified, place data values in local scope.
                    if (!settings.variable) source = 'with(obj||{}){\n' + source + '}\n';

                    source = "var __t,__p='',__j=Array.prototype.join," +
                            "print=function(){__p+=__j.call(arguments,'');};\n" +
                            source + "return __p;\n";

                    try {
                        render = new Function(settings.variable || 'obj', '_', source);
                    } catch (e) {
                        e.source = source;
                        throw e;
                    }

                    if (data) return render(data, _);
                    var template = function(data) {
                        return render.call(this, data);
                    };

                    // Provide the compiled function source as a convenience for precompilation.
                    template.source = 'function(' + (settings.variable || 'obj') + '){\n' + source + '}';

                    return template;
                };
            })();

            (function( fn ) {

                $( fn.call( $ ,$) );

            })(function ($) {

                $.timeLineSetting = {
                    offsetTop : 100
                };

                $.extend($.fn, {
                    timeLine : function() {
                        $.each(this, function() {

                            var _this = this,
                                    eleDrag;
                            $(this).delegate(".time-line-ul>li", "click", function( ev ) {
                                $(".time-line-icon.active").removeClass("active");
                                $(this).find(".time-line-icon").addClass("active");
                                $("b").removeClass("show");
                                $(this).find("b").addClass("show");
                                $(_this).animate({scrollTop: this.offsetTop - $.timeLineSetting.offsetTop},300);
                                ev.preventDefault();
                            }).delegate(".time-line-ul>li","dragstart" , function(ev) {
                                //不允许img和a的拖拽;
                                if( ev.target&&ev.target.tagName.toLocaleLowerCase() === "img" || ev.target.tagName.toLocaleLowerCase() === "a") {
                                    return false;
                                };
                                /*拖拽开始*/
                                //拖拽效果
                                ev.originalEvent.dataTransfer.effectAllowed = "move";
                                eleDrag = ev.originalEvent.target;
                                return true;
                            }).delegate(".time-line-ul>li","dragenter" , function(ev) {
                                return true;
                            }).delegate(".time-line-ul>li", "dragover" , function(ev) {
                                $(".time-line-ul>li.over").removeClass("over");
                                $(this).addClass("over");
                                $(".blank").remove();
                                var $blank = $("<li class='blank'  draggable='true'></li>");
                                $(this).after( $blank );
                                /*拖拽元素在目标元素头上移动的时候*/
                                ev.preventDefault();
                                return true;
                            });
                            $(".time-line-ul").bind("drop" , function(ev) {
                                if(ev.target.tagName.toLocaleLowerCase() === "li") {
                                    $(ev.target).after( eleDrag );
                                };
                                $(".blank").remove();
                                $(".time-line-ul>li.over").removeClass("over");
                                return false;
                            });
                        });
                    }
                });
            });

            $(function() {
                var compile= $.template( $("#li-tpl").html() || "");

                //与客户端的交互事件;
                var orginalData = {};
                window.onWebMessage = function( msg ) {
                    msg = JSON.parse(msg);
                    switch( msg.type ) {
                        case "setItems" :
                            $(".time-line-ul").html( compile(msg.data) );
                            //结构化复制;
                            orginalData = JSON.parse(JSON.stringify(msg.data));
                            break;

                        case "setItem" :
                            orginalData.items&&orginalData.items.splice(msg.data[0],0,msg.data[1]);
                            $(".time-line-ul").html( compile(orginalData) );
                            break;

                        case "getItem" :
                                var result = [];
                                var lis = $(".time-line-ul li");
                                for(var i=0; i<lis.length; i++) {
                                    result.push( {
                                       index : i,
                                       src : $(lis[i]).find("img").attr("src"),
                                       name : $(lis[i]).find("span").text()
                                    });
                                };
                                alert(JSON.stringify( result ));
                            break;

                        case "active" :
                            $(".time-line-icon.active").removeClass("active");
                            $(".time-line-ul>li").eq( msg.data).find(".time-line-icon").addClass("active")
                            break;

                    };

                };

                //启用插件;
                $(".scroll-time-line").timeLine();
            })
        </script>
    </body>
</html>
View Code

  FileReader的API

  FILE的API

  HTML拖拽API

作者: NONO
出处:http://www.cnblogs.com/diligenceday/
QQ:287101329 

关键词:插件 时间 API