vue之refs
阿新 • • 發佈：2020-11-12
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
</head>
<body>
<div id="app">
<App></App>
</div>
<script src="./vue.js"></script>
<script>
Vue.component('Test', {
data() {
return {
msg: "Test元件",
}
},
template: `
<div>
<h3>{{msg}}</h3>
</div>
`,
})
const App = {
mounted(){
// 1.如果給標籤新增ref,獲取的就是真實的DOM節點
// 2.如果給子元件新增ref,獲取的是當前子元件物件
console.log(this.$refs.btn);
// 載入頁面,自動獲取焦點
this.$refs.input.focus();
console.log(this.$refs.test);
},
components: {},
template: `
<div>
<Test ref='test'></Test>
<input type="text" ref='input'/>
<button ref='btn'>改變生死</button>
</div>
`,
}
new Vue({
el: '#app',
components: {
App
}
})
</script>
</body>
</html>