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vue3.0-browser-based
/
index2.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Demo19</title>
    <script src="https://unpkg.com/vue@next" ></script>
</head>
<body>
    <div id="app"></div>
</body>
<script>
    const app=Vue.createApp({
    data(){
        return{
            count:0
        }
    },
    methods:{
        addCountClick(){
            // this.count++
            console.log(1)
        },
        handleBtnClick1(){
            // alert(1)
            console.log(2)
        },
    },
    template:`
        <div @click="handleBtnClick1">
            <div>目前已点佳丽数量{{count}}.</div>
            <button @click.once="addCountClick()">增加一位佳丽</button>
       </div>
        `
    })
    const vm=app.mount("#app")

</script>

</html>