self_example/java_web/Vue-demo/src/main/webapp/04-vue-v-if.html

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HTML

<!DOCTYPE html>
<html lang="en" xmlns:v-on="http://www.w3.org/1999/xhtml">
<head>
<meta charset="UTF-8">
<title>01-vue-on</title>
</head>
<body>
<div id="app">
<div v-if="count==3">div1</div>
<div v-else-if="count==4">div2</div>
<div v-else>div3</div>
<hr>
<div v-show="count==3">div v-show</div>
<br>
<input v-model="count">
</div>
<script src="js/vue.js"></script>
<script>
//1.创建Vue核心对象
new Vue({
el: "#app",
//简写方式
data() {
return {
username: "",
url: "http://www.baidu.com",
count:3
}
},
methods: {
show() {
alert("我被点了");
}
}
});
</script>
</body>
</html>