代码示例
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>v-show的作用——根据表达式的布尔值切换元素的显示与隐藏</title>
</head>
<body>
<!-- v-show常用于广告的显示与隐藏、遮罩层的显示与隐藏等，本质是修改元素的display属性 -->
<div id="app">
<div style="width: 100px; height: 200px; background-color: green" v-show="isShow"></div>
<button @click="changeIsShow">切换显示状态</button>
<!-- v-show后也可直接加布尔值表达式，如age>18 -->
<div style="width: 100px; height: 200px; background-color: yellow" v-show="age>18"></div>
<button @click="decAge">减少年龄</button>
<button @click="incAge">增加年龄</button>
</div>
<script src="/vue/node_modules/vue/dist/vue.js"></script>
<script>
var app = new Vue({
el:"#app",
data:{
isShow:false,
age: 18
},
methods:{
changeIsShow:function(){
this.isShow = !this.isShow;
},
decAge:function(){
this.age--;
},
incAge:function(){
this.age++;
}
}
});
</script>
</body>
</html>