vue 异步组件

 1 <!DOCTYPE html>
 2 <html>
 3     <head>
 4         <meta charset="UTF-8">
 5         <title>Vue</title>    
 6         <style>
 7             
 8         </style>
 9     </head>
10     <body>    
11         <div id="app">
12             <child-component></child-component>
13         </div>
14         <!-- 开发环境版本，包含了用帮助的命令行警告 -->
15         <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
16         <script type="text/javascript">
17             Vue.component('child-component', function(resolve, reject) {
18                 window.setTimeout(function() {
19                     resolve({
20                         template: '<div>异步渲染</div>'
21                     })
22                 }, 2000);
23             })
24             var app = new Vue({
25                 el:'#app'
26                 
27             });    
28             
29         </script>
30     </body>
31 </html>