<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
</head>
<body>
<div id="app">
<li v-for="(book,index) in books" >{{index}}--{{book.name}}</li>
// 遍历对象属性时，有两个可选参数，分别是键名和索引：
<p v-for="(value,key,index) in userInfo">{{index}}--{{key}}--{{value}}</p>
</div>
<script>
var v=new Vue({
el:"#app",
data:{
books:[{'name':'java编程思想'},{'name':'java设计模式'}],
userInfo:{
'name':'zhangsan',
'age':28
}
}
});
</script>
</body>
</html>