<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<script src="https://cdn.jsdelivr.net/npm/vue@2/dist/vue.js"></script>
</head>
<body>
<div id="app">
<comp></comp>
<comp></comp>
</div>
<template id="comp">
<div id="">
<p>{{message}}</p>
<button @click="add">+</button>
{{ count }}
<button @click="sub">-</button>
</div>
</template>
<script>
const app = new Vue({
el: '#app',
data: {
},
components: {
comp: {
template: '#comp',
// data必须是函数
data() {
return {
message: 'Hello Vue.js!',
count: 1,
}
},
methods: {
add() {
this.count++;
},
sub() {
this.count--;
}
}
},
}
})
</script>
</body>
</html>
