<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<div id="app">
<div :style='{fontSize:fontSize+"px"}'>{{pmsg}}</div>
<menu-item :parr='parr' @enlarge-text='handle($event)'></menu-item>
</div>
<script type="text/javascript" src="./js/vue.js"></script>
<script>
Vue.component('menu-item', {
props: ['parr'],
template: `<div>><ul><li :key="index" v-for="(item,index) in parr">{{item}}</li></ul>
<button @click='parr.push("lemon")'>点击</button>
<button @click='$emit("enlarge-text",5)'>扩大</button>
<button @click='$emit("enlarge-text",10)'>扩大</button>
</div>`
});
var vm = new Vue({
el: '#app',
data: {
pmsg: '父亲组件内容',
pstr: 'hello',
parr: ['apple', 'orange', 'banana'],
fontSize: 10
},
methods: {
handle: function(val) {
this.fontSize += val;
}
}
})
</script>
</body>
</html>
