vue.js实现三级菜单效果

本文实例为大家分享了vue.js实现三级菜单的具体代码，供大家参考，具体内容如下html部分&l

本文实例为大家分享了vue.js实现三级菜单的具体代码，供大家参考，具体内容如下

html部分

<div id="warp">
 <ul id="menu">
 <li class="firstLevel" v-for="(firstList,index) in menuData">{{firstList.title}} 
 <ul v-if="firstList.value">
 <li class="secondLevel" v-for="(secondList,index) in firstList.value">{{secondList.title}}
 <ul class="thirdLevel">
 <li v-for="(thirdList,index) in secondList.value2">{{thirdList}}</li>
 </ul>
 </li> 
 </ul>
 </li>
 </ul>
</div>

js部分

var app = new Vue({
 el:"#warp",
 data:{
 menuData: {
 firstList:{
 title:'练习册1', 
 value: [
 {
 title:"物理",
 value2:[
 "暑期",
 "寒假",
 "周末"
 ]
 },
 {
 title:"化学",
 value2:[
 "暑期",
 "寒假",
 "周末"
 ]
 },
 ],
 },
 secondList:{
 title:'练习册2', 
 value: [
 {
 title:"政治",
 value2:[
 "暑期",
 "寒假",
 "周末"
 ]
 },
 {
 title:"地理",
 value2:[
 "暑期",
 "寒假",
 "周末"
 ]
 },
 ],
 },
 thirdList:{
 title:'练习册3', 
 value: [
 {
 title:"语文",
 value2:[
 "暑期",
 "寒假",
 "周末"
 ]
 },
 {
 title:"数学",
 value2:[
 "暑期",
 "寒假",
 "周末"
 ]
 },
 {
 title:"英语",
 value2:[
 "暑期",
 "寒假",
 "周末"
 ]
 },
 ],
 }
 }, 
 },
});

css部分

body{
 max-width: 640px;
 margin: 0px auto;
 font-size: 14px;
 color: #666666;
 background-color: #ffffff;
}
ul{
 padding: 0px;
}
li{
 list-style: none;
}
#menu{
 display: flex;
 justify-content: space-between;
}
.firstLevel{
 position: relative;
 min-width: 100px;
 cursor: pointer;
}
.secondLevel{
 display: none;
 margin-left: 10px;
}
.firstLevel:hover .secondLevel{
 display: block;
}
.thirdLevel{
 display: none;
 margin-left: 15px;
 width: 40px;
}
.secondLevel:hover .thirdLevel{
 display: block;
}

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