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VUE实例 -- 洗牌

<!DOCTYPE html><html lang="en">    <head>        <meta charset="utf-8">        <title>VUE实例洗牌</title>        <script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.14.1/lodash.min.js"></script>        <script src="http://www.mamicode.com/plug_in/vue2.0.js"></script>        <style type="text/css">             #file-demo {                background: #ccc;                padding-left: 20px;                padding-top: 20px;                padding-bottom: 40px;                overflow: hidden;                width: 490px;            }            #file-demo li{            	list-style: none;                border: 1px solid #fff;                float: left;                width: 50px;                height: 40px;                text-align: center;                line-height: 50px;            }            .file-move {                transition: transform 1s;            }            .file {                position: absolute;            }        </style>    </head>    <body>        <div id="file-demo" class="file">            <h3>洗牌</h3>            <span>基于VUE列表的位移过渡效果功能和loadash.js的实例</span>            <button @click="shuffle">shuffle</button>            <transition-group name="file" tag="p">                <li v-for="item in items" v-bind:key="item.id">                    {{ item.number }}                </li>            </transition-group>        </div>    </body>        <script type="text/javascript">        var vm=new Vue({            data: {                /**                 * Array.apply()创建数组,并规定数组的长度,map循环便利添加到li里                 *                  */                items:Array.apply(null, {length: 81}).map(function(_, index){                    return {                        id: index,                        number: index % 9 + 1                    }                })            },            methods: {               shuffle:function(){                    /* 列表位移过渡效果的核心 */                    this.items = _.shuffle(this.items);               }            }        }).$mount("#file-demo")    </script></html>
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VUE实例 -- 洗牌