StudyPython/Resource/active-component.html at dev · loaderlin/StudyPython · GitHub

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<!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>
    <style type="text/css">
        .posts-sidebar li:hover{
            background: #eee;
        }
        .posts-sidebar li.selected {
            background: lightblue;
        }
    </style>
</head>
<body>
<div id="app">
    <keep-alive>
        <component :is="currentView"></component>
    </keep-alive>
    <button @click="handleChangeView('A')">切换到A</button>
    <button @click="handleChangeView('B')">切换到B</button>
    <button @click="handleChangeView('C')">切换到C</button>
</div>
</body>
<script src="https://cdn.jsdelivr.net/npm/vue"></script>
<script>
    var app = new Vue({
        el: "#app",

        components: {
            comA: {
                data: function () {
                    return {
                        posts: [
                            { id: 1, title: "Cat Ipsum", content: 'Dont you ' },
                            { id: 2, title: "Cat ", content: 'Dont you ' },
                            { id: 3, title: "Cat Ipsum", content: 'Dont you ' }
                        ],
                        selectPost: null
                    }
                },
                template: `
                    <div>
                        <ul class="posts-sidebar">
                            <li
                                v-for="post in posts"
                                :key="post.id"
                                :class="{ selected: post === selectPost }"
                                @click="selectPost = post"
                            >
                            {{ post.title }}
                            </li>
                        </ul>
                    </div>
                `
            },
            comB: {
                template: '<div>组件B</div>'
            },
            comC: {
                template: '<div>组件C</div>'
            }
        },
        data: {
            currentView: 'comA'
        },
        methods: {
            handleChangeView: function (component) {
                this.currentView =  'com' + component;
            }
        }
    })
</script>
</html>