<!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">
<h1>{{rootMesage}}</h1>
<child1-component ref="child1"></child1-component>
<child2-component ref="child2"></child2-component>
<h2 ref="heading2">使用 ref 特殊属性标识元素</h2>
<button type="button" @click="onClick">改变 h2 的颜色</button>
</div>
<script src="./vue.js"></script>
<script>
const app = new Vue({
el: '#app',
data: {
rootMesage: 'app根组件的数据'
},
methods: {
onClick() {
this.$refs.heading2.style.color = 'red'
}
},
mounted() {
console.log(this.$refs.child1)
console.log(this.$refs.child2)
console.log(this.$refs.heading2)
},
components: {
'child1-component': {
data() {
return {
child1Message: 'child1组件的数据'
}
},
template: '<div><h2>{{child1Message}}</h2></div>'
},
'child2-component': {
data() {
return {
child2Message: 'child2组件的数据'
}
},
template: '<div><h2>{{child2Message}}</h2></div>'
}
}
});
</script>
</body>
</html>
