<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<div id="app">
<!-- 调用全局注册的组件 -->
<button-counter></button-counter>
<p>----------------------</p>
<buttonCounter></buttonCounter>
<box1></box1>
<button-counter></button-counter>
</div>
<p>======================</p>
<div id="root">
<button-counter></button-counter>
<box2></box2>
</div>
<script src="js/vue.3.2.2.js"></script>
<script>
//注册一个局部组件
const Counter={
data(){
return{
count: 0
}
},
template:'<button @click="count++">点{{count}}次</button>'
}
const Box={
components: {
'button-counter':Counter
},
template:'<div style="background-color: red">' +
'div_box2' +
'<button-counter></button-counter>' +
'</div>'
}
// 1、创建Vue的实例对象
const app = Vue.createApp({
data(){//定义数据
return {
msg:'你好！'
}
}
});
const root = Vue.createApp({
data(){//定义数据
return {
msg:'你好2！'
}
},
components:{
'button-counter':Counter,
'box2':Box
}
});
<!-- 建议使用这种 -->
app.component('button-counter',{
data(){
return{
count: 0
}
},
template:'<button @click="count++">点击{{count}}次</button>'
});
<!-- 这种只有脚手架工程开发时才有效 -->
app.component('buttonCounter',{
data(){
return{
count2: 0
}
},
template:'<button @click="count2++">点击{{count2}}次</button>'
});
app.component('box1',{
template:'<div style="background-color: red">' +
'div_box1' +
'<button-counter></button-counter>' +
'</div>'
});
app.mount('#app');
root.mount('#root');
</script>
</body>
</html>
