<template> <div id="app" class="demo"> <button v-for="tab in tabs" v-bind:key="tab" v-bind:class="['tab-button', { active: currentTab === tab }]" v-on:click="currentTab = tab" > {{ tab }} </button> <keep-alive> <component :is="currentTabComponent"></component> </keep-alive> </div> </template> <script> import { computed, reactive, toRefs } from "vue"; import TabPosts from "./components/tabPosts.vue"; import TabHome from "./components/tabHome.vue"; import TabLikes from "./components/tabLikes.vue"; export default { components: { TabPosts, TabHome, TabLikes, }, setup() { const data = reactive({ currentTab: "Home", tabs: ["Home", "Posts", "Likes"], }); const currentTabComponent = computed(() => { return "tab-" + data.currentTab.toLowerCase(); }); return { ...toRefs(data), currentTabComponent, }; }, }; </script> <style> .demo { font-family: sans-serif; border: 1px solid #eee; border-radius: 4px; padding: 20px 30px; margin-top: 1em; margin-bottom: 10px; user-select: none; overflow-x: auto; } .tab-button:hover { padding: 12px 20px; border-top-left-radius: 6px; border-top-right-radius: 6px; border: 1px solid #ccc; cursor: pointer; background: #f0f0f0; margin-bottom: -2px; overflow-x: -2px; } .tab-button:active { background: #e0e0e0; } .demo-tab { border: 1px solid #ccc; padding: 20px; } </style>把这个美化一下

<>
<div id="app" class="demo">
<button
v-for="tab in tabs"
v-bind:key="tab"
v-bind:class="['tab-button', { active: currentTab === tab }]"
v-on:click="currentTab = tab"
>
{{ tab }}
</button>
<keep-alive>
<component :is="currentTabComponent"></component>
</keep-alive>
</div>
</template>

<script>
import { computed, reactive, toRefs } from "vue";
import TabPosts from "./components/tabPosts.vue";
import TabHome from "./components/tabHome.vue";
import TabLikes from "./components/tabLikes.vue";

export default {
components: {
TabPosts,
TabHome,
TabLikes,
},
setup() {
const data = reactive({
currentTab: "Home",
tabs: ["Home", "Posts", "Likes"],
});

const currentTabComponent = computed(() => {
return "tab-" + data.currentTab.toLowerCase();
});

return {
...toRefs(data),
currentTabComponent,
};
},
};
</script>

<style>
.demo {
font-family: sans-serif;
border: 1px solid #eee;
border-radius: 4px;
padding: 20px 30px;
margin-top: 1em;
margin-bottom: 10px;
user-select: none;
overflow-x: auto;
}

.tab-button:hover {
padding: 12px 20px;
border-top-left-radius: 6px;
border-top-right-radius: 6px;
border: 1px solid #ccc;
cursor: pointer;
background: #f0f0f0;
margin-bottom: -2px;
overflow-x: -2px;
}

.tab-button:active {
background: #e0e0e0;
}

.demo-tab {
border: 1px solid #ccc;
padding: 20px;
}
</style>