两种组件抽离方式，写法
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<div id="app">
{{message}}
<cpn></cpn>
</div>
<script type="text/x-template" id="cpn1">
<div>
<h1>我是标题</h1>
<p>我是内容，哈哈哈</p>
</div>
</script>
<script src="../vue.js"></script>
<template id="cpn2">
<div>
<h1>我是标题二</h1>
<p>我是内容，呵呵呵呵</p>
</div>
</template>
<script>
Vue.component('cpn',{
template:'#cpn2'
})
const app = new Vue({
el: '#app',
data: {
message: 'hello'
}
})
</script>
</body>
</html>