lovecoding
/
VIP29


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>模板</title>
    <!-- 引入文件   -->
    <script src="https://unpkg.com/vue@3/dist/vue.global.js"></script>
</head>
<body>
    <div id="app">
        <div v-if="flag">
            <img src="imgs/off.gif">
        </div>
        <div v-else>
            <img src="imgs/on.gif">
        </div>

        <button @click="changeBut(1)">打开</button>
        <button @click="changeBut(0)">关闭</button>
    </div>
</body>
<script>
    const { createApp, ref } = Vue;
    createApp({
        setup() {
            let flag = ref(true);
            function changeBut( i ){
                if (i== 1){
                    flag.value = false;
                } else {
                    flag.value = true;
                }
            }
            return {
                flag,changeBut
            };
        }
    }).mount('#app'); //createApp创建对象 挂在到app
</script>
</html>