时间:3个小时左右
代码:120行左右
博客:1
知识点:vue的父组件向子子件传值
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body>
<div id="app">
<div>{{pmsg}}</div>
<menu-item title='来自父组件的值'></menu-item>
<menu-item :title='ptitle' content='hello'></menu-item>
</div>
<script type="text/javascript" src="js/vue.js"></script>
<script type="text/javascript">
/*
父组件向子组件传值-基本使用
*/
Vue.component('menu-item', {
props: ['title', 'content'],
data: function() {
return {
msg: '子组件本身的数据'
}
},
template: '<div>{{msg + "----" + title + "-----" + content}}</div>'
});
var vm = new Vue({
el: '#app',
data: {
pmsg: '父组件中内容',
ptitle: '动态绑定属性'
}
});
</script>
</body>
</html>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body>
<div id="app">
<div :style='{fontSize: fontSize + "px"}'>{{pmsg}}</div>
<menu-item :parr='parr' @enlarge-text='handle($event)'></menu-item>
</div>
<script type="text/javascript" src="js/vue.js"></script>
<script type="text/javascript">
/*
子组件向父组件传值-携带参数
*/
Vue.component('menu-item', {
props: ['parr'],
template: `
<div>
<ul>
<li :key='index' v-for='(item,index) in parr'>{{item}}</li>
</ul>
<button @click='$emit("enlarge-text", 5)'>扩大父组件中字体大小</button>
<button @click='$emit("enlarge-text", 10)'>扩大父组件中字体大小</button>
</div>
`
});
var vm = new Vue({
el: '#app',
data: {
pmsg: '父组件中内容',
parr: ['apple','orange','banana'],
fontSize: 10
},
methods: {
handle: function(val){
// 扩大字体大小
this.fontSize += val;
}
}
});
</script>
</body>
</html>