时间：2021-07-01 08:51:41 | 栏目：vue | 点击：次
如何把孙组件内特定的数据传给爷组件？
例如
把孙组件的名字传给爷组件并在爷组件上显示
思路
<!DOCTYPE html>
<html lang="en" dir="ltr">
<head>
<meta charset="utf-8">
<title></title>
<script src="https://cdn.jsdelivr.net/npm/vue@2.6.7/dist/vue.js"></script>
</head>
<body>
<div id="app">
child name: {{child}}
<parent v-on:say2='greeting("child", $event)'></parent>
</div>
</body>
<script>
Vue.component('parent', {
template: `
<div>
<child v-on:say1='$emit("say2", $event)'></child>
</div> `
})
Vue.component('child', {
template: `
<div>
child
<button v-on:click='$emit("say1", "Jack")'>greeting</button>
</div>
`
})
new Vue({
el: '#app',
data: {
child: '',
},
methods: {
greeting: function (key, value) {
this[key] = value
},
}
})
</script>
</html>