智享笔记 <body>
<div id="app">
<div :style='{fontSize: fontSize + "px"}'>{{pmsg}}</div>
<menu-item :parr='parr' @enlarge-text='handle'></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-基本用法
props传递数据原则：单向数据流
*/
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")'>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(){
// 扩大字体大小
this.fontSize += 5;
}
}
});
</script>
</body>子组件向父组件传值
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