目录
vue学习10 v-for指令
v-for指令的作用是：根据数据生成列表结构
数组经常和v-for结合使用，语法是(item,index) in 数据
数组长度的更新会同步到页面上，是响应式更新
练习代码：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<div id="app">
<input type="button" value="添加数据" @click="add">
<input type="button" value="移除数据" @click="remove">
<ul>
<li v-for = "(it,index) in arr">
{{index+1}} 侠客小飞学习:{{it}}
</li>
</ul>
<h2 v-for = "item in vegetables" v-bind:title="item.name">
{{ item.name }}
</h2>
</div>
<script src="js/vue.js"></script>
<script>
var app = new Vue({
el:"#app",
data: {
arr: ["C语言","java","python","html"],
vegetables:[
{name:"土豆肉丝盖饭"},
{name:"韭菜鸡蛋盖饭"},
]
},
methods:{
add: function(){
this.vegetables.push({name:"西红柿鸡蛋盖饭"});
},
remove: function(){
this.vegetables.shift();
}
},
})
</script>
</body>
</html>
运行效果：
