vue2.0动态组件及render

<template> <div class="hello"> <h1>{{ msg }}</h1> <h2>这里是Boor</h2> <component v-bind:my-data="items" v-bind:is="currentView"> <!-- 组件在 vm.currentview 变化时改变！ --> </component> <a class="explain">直直</a> <button v-on:click="addData">点击</button> </div> </template> <script> //import $ from '@/assets/scripts/lib/zepto.min' //console.log($); //import Vue from 'vue' function isEmptyObject(e) { var t; for (t in e) return !1; return !0 } function objectLength(o) { var len = 0; for(var p in o) { len++; } return len; } let data ={ c_0:{c:1}, c_1:{c:2}, c_2:{c:3}, c_3:{c:4} }; let num = 0; //console.log(objectLength(data)); const MyComponent = { //template: '<h3 v-for="item in items">{{ item.c}}</h3>', props: ['myData'], data(){ return{ //items : myData } }, render: function (createElement) { debugger; let items = this.myData; //items = JSON.stringify(items); let num = objectLength(items); if (!isEmptyObject(items)) { debugger; return createElement('div', Array.apply(null, { length: num }).map(function (v,index) { return createElement('h3', items['c_'+index]['c'].toString()) })) } else { return createElement('h1', '没有数据!'); } } }; // 注册 //Vue.component('my-component', MyComponent); export default { name: 'bar', data () { return { msg: 'Bar', fuck: 'Hello', items: data, currentView: MyComponent } }, methods:{ addData : function(){ for(let p in data) { if(p == 'c_'+num) { data[p] = {'c': num }; } else { data['c'+num] = {'c': num }; } } num++; } } }; </script> <!-- Add "scoped" attribute to limit CSS to this component only --> <style scoped> h1, h2 { font-weight: normal; } ul { list-style-type: none; padding: 0; } li { display: inline-block; margin: 0 10px; } a { color: #42b983; } </style>