vue学习笔记day07 列表渲染

最新推荐文章于 2023-09-16 17:53:42 发布

桑丘紫言

最新推荐文章于 2023-09-16 17:53:42 发布

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分类专栏： vue

本文链接：https://blog.youkuaiyun.com/weixin_39209728/article/details/104541908

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一 vue的列表渲染
    1》 v-for="(item ,index) in 数组名称" 
        item是数组中的每一个值
        index是数组的下标
    2》 v-for="(item ,index) in 对象名称" 
        item是对象的value
        index是对象的key

例子1

<!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>Document</title>
</head>

<body>
    <div id="app">
        <!-- <ul>
            <li v-for="item in arr">{{item}}</li>
        </ul> -->
        <ul>
            <li v-for="(item,index) in arr">
                {{item}} --{{index}}
            </li>
        </ul>
    </div>

    <script src="../vue.js"></script>
    <script>
        new Vue({
            el: "#app",
            data: {
                arr: ["鞋子", "裤子", "上衣"],
            },



        })
    </script>
</body>

</html>

例子2

<!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>Document</title>
</head>

<body>
    <div id="app">
        <ul>
            <li v-for="(item,index) in json">
                {{item}} --{{index}}
            </li>
        </ul>
    </div>

    <script src="../vue.js"></script>
    <script>
        new Vue({
            el: "#app",
            data: {
                json: {
                    userName: "zhangsan",
                    userAge: 18
                }
            },



        })
    </script>
</body>

</html>

例子3

<!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>Document</title>
</head>

<body>
    <div id="app">
        <!-- <ul>
            <li v-for="(item,index) in json.arr">
                {{item}} --{{index}}
            </li>
        </ul> -->
        <ul>
            <li v-for="(item,index) in json">
                <p>{{typeof item}}</p>
                {{item}} --{{index}}
            </li>
        </ul>
    </div>

    <script src="../vue.js"></script>
    <script>
        new Vue({
            el: "#app",
            data: {
                json: {
                    userName: "zhangsan",
                    userAge: 18,
                    arr: [1, 2, 3]
                }
            },



        })
    </script>
</body>

</html>