[英]Vue3 Tree Menu Show
this is what i want to do with vue.js, If Menu 1
or Menu 2
is clicked among the items with submenu, its ul will be opened, and if Menu 1
is open, Menu 2
is clicked.这就是我想用 vue.js 做的,如果在带有子菜单的项目中单击
Menu 1
或Menu 2
,它的 ul 将被打开,如果Menu 1
打开,则单击Menu 2
。 Close Menu 1
.关闭
Menu 1
。 I couldn't do this, I would be happy if you help me.我做不到,如果你能帮助我,我会很高兴。 What I want to do is if one of the submenu is open, the 2nd submenu remains closed.
我想要做的是,如果其中一个子菜单处于打开状态,则第二个子菜单保持关闭状态。 Codesandbox
代码沙盒
<template>
<div class="navigation">
<div class="container max-w-7xl mx-auto">
<ul class="flex justify-end navbar-nav">
<li v-for="(menu, index) in menuItem" :key="index">
<a href="menu.href" @click.stop="showMenu()">{{ menu.title }}</a>
<ul v-if="menu.children" :style="{ display: active ? 'block' : 'none' }" @click.stop>
<li v-for="(child, childIndex) in menu.children" :key="childIndex">
<a href="child.href">{{ child.title }}</a>
</li>
</ul>
</li>
</ul>
</div>
</div>
</template>
<script>
export default {
name: "Home",
data() {
return {
active: false,
menuItem: [
{
title: "Home",
href: "/home",
},
{
title: "About",
href: "/about",
},
{
title: "Menu 1",
href: "#",
children: [
{
title: "Menu 1.1",
href: "/menu/1/1",
},
{
title: "Menu 1.2",
href: "/menu/1/2",
},
{
title: "Menu 1.3",
href: "/menu/1/3",
},
],
},
{
title: "Menu 2",
href: "#",
children: [
{
title: "Menu 2.1",
href: "/menu/2/1",
},
{
title: "Menu 2.2",
href: "/menu/2/2",
},
{
title: "Menu 2.3",
href: "/menu/2/3",
},
],
},
{
title: "Gallery",
href: "/gallery",
},
{
title: "Contact",
href: "/contact",
},
],
};
},
methods: {
showMenu() {
this.active = !this.active;
},
close() {
this.active = false;
},
},
mounted() {
document.addEventListener("click", this.close);
},
unmounted() {
document.removeEventListener("click", this.close);
},
};
</script>
Please take a look at following snippet (you need to use index):请查看以下代码片段(您需要使用索引):
const app = Vue.createApp({ data() { return { menuItem: [{title: "Home", href: "/home",}, {title: "About", href: "/about",}, {title: "Menu 1", href: "#", children: [{title: "Menu 1.1", href: "/menu/1/1",}, {title: "Menu 1.2", href: "/menu/1/2",}, {title: "Menu 1.3", href: "/menu/1/3",},],}, {title: "Menu 2", href: "#", children: [{title: "Menu 2.1", href: "/menu/2/1",}, {title: "Menu 2.2", href: "/menu/2/2",}, {title: "Menu 2.3", href: "/menu/2/3",},],}, {title: "Gallery", href: "/gallery",}, {title: "Contact", href: "/contact",},], selected: null }; }, methods: { showMenu(i) { this.selected = i }, } }) app.mount('#demo')
<script src="https://unpkg.com/vue@3.2.29/dist/vue.global.prod.js"></script> <div id="demo"> <div class="navigation"> <div class="container max-w-7xl mx-auto"> <ul class="flex justify-end navbar-nav"> <li v-for="(menu, index) in menuItem":key="index"> <a href="#" @click.stop="showMenu(index)">{{ menu.title }}</a> <ul:style="selected === index? 'display: block': 'display: none'"> <li v-for="(child, childIndex) in menu.children":key="childIndex"> <a href="#">{{ child.title }}</a> </li> </ul> </li> </ul> </div> </div> </div>
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