vue之计算属性的缓存computed的使用

兮动人

发布于 2021-06-11 16:19:39

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发布于 2021-06-11 16:19:39

文章被收录于专栏：兮动人的博客

计算属性的缓存

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <div id="app">
        <!--1.直接拼接:语法过于繁琐-->
        <h2>{{firstName}} {{lastName}}</h2>

        <!--2.通过定义methods-->
        <h2>{{getFullName()}}</h2>
        
        <!--3.通过computed-->
        <h2>{{fullName}}</h2>
    </div>

    <script src="../js/vue.js"></script>
    <script>
        const app = new Vue({
        el: '#app',
        data: {
            firstName: 'Kobe',
            lastName: 'Bryant'
            },
            methods: {
                getFullName: function () {
                    return this.firstName+' '+this.lastName
                }
            },
            computed: {
                fullName: function () {
                    return this.firstName+' '+this.lastName
                }
            }
        })
    </script>
</body>
</html>