vue中的v-show指令和v-if
<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta http-equiv="X-UA-Compatible" con
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v-if假如为false直接就不加载这个标签,
v-show只是改变css的display的属性
<!DOCTYPE html>
<html lang="en">
<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>Vue</title>
</head>
<body>
<div id="app">
<input type="button" value="切换显示状态" @click="changeIsShow">
<input type="button" value="累加年龄" @click="addAge">
<img v-show="isShow" src="1.jpg" alt="">
<img v-show="age>=18" src="1.jpg" alt="">
</div>
<!-- 开发环境版本,包含了有帮助的命令行警告 -->
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<script>
var app=new Vue({
el:"#app",
data:{
isShow:false,
age:17
},
methods:{
changeIsShow:function(){
this.isShow=!this.isShow;
},
addAge:function(){
this.age++;
}
}
})
</script>
</body>
</html>
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