html单页面通过cdn引入element-ui组件样式不显示问题
必须先引入vue，再通过cdn引入element，否则element-ui组件与样式无效。
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<!-- 1. 引入vue -->
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<!-- 2. 引入样式 -->
<link rel="stylesheet" href="https://unpkg.com/element-ui/lib/theme-chalk/index.css">
<!-- 3. 引入组件库 -->
<script src="https://unpkg.com/element-ui/lib/index.js"></script>
<title>element</title>
</head>
<body>
<div id="app">
<el-button>按钮</el-button>
</div>
</body>
<script>
new Vue({
el: '#app',
data() {
return {
}
},
})
</script>
</html