<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<div id="app">
<alert-box>有bug发生</alert-box>
<alert-box>有一个警告</alert-box>
<alert-box></alert-box>
</div>
<script type="text/javascript" src="./js/vue.js"></script>
<script>
Vue.component('alert-box', {
template: `
<div><strong>ERROR:</strong>
<slot>默认内容</slot>
</div>
`
})
var vm = new Vue({
el: '#app',
data: {
},
})
</script>
</body>
</html>
