<template> 
  <div class="asideBox"> 
   <aside> 
    <ul class="asideMenu"> 
     <li v-for="(item,index) in menuList"> 
      <div class="oneMenu" @click="showToggle(item,index)"> 
       <img v-bind:src="item.imgUrl" /> 
       <span>{{item.name}}</span> 
      </div> 
      <ul v-show="item.isSubShow"> 
       <li v-for="subItem in item.subItems"> 
        <div class="oneMenuChild">{{subItem.name}}</div> 
       </li> 
      </ul> 
     </li> 
    </ul> 
   </aside> 
  </div> 
</template> 

export default { 
  data(){ 
   return{ 
    menuList:[ 
     { 
      name:'字符錄入', 
      imgUrl:require('../assets/images/icon-character.png'), 
      isSubShow:false, 
      subItems:[ 
       { 
        name:'字符錄入' 
       }, 
       { 
        name:'白話文錄入' 
       }, 
       { 
        name:'文言文錄入' 
       }, 
       { 
        name:'小寫數字錄入' 
       } 
      ] 
     }, 
     { 
      name:'票據數據錄入', 
      imgUrl:require('../assets/images/icon-bill.png'), 
      isSubShow:false, 
      subItems:[ 
       { 
        name:'票據錄入' 
       }, 
       { 
        name:'翻打傳票' 
       }, 
      ] 
     }, 
     { 
      name:'交易碼錄入', 
      imgUrl:require('../assets/images/icon-transaction.png'), 
      isSubShow:false, 
      subItems:[ 
       { 
        name:'交易碼錄入' 
       }, 
       { 
        name:'交易名稱錄入' 
       }, 
      ] 
     }, 
     { 
      name:'操作碼錄入', 
      imgUrl:require('../assets/images/icon-operation.png'), 
      isSubShow:false, 
      subItems:[ 
       { 
        name:'操作碼錄入' 
       }, 
       { 
        name:'操作名稱錄入' 
       }, 
      ] 
     }, 
     { 
      name:'票據學習', 
      imgUrl:require('../assets/images/icon-billearn.png'), 
      isSubShow:false, 
      subItems:[ 
      ] 
     }, 
     { 
      name:'內部憑證學習', 
      imgUrl:require('../assets/images/icon-voucher.png'), 
      isSubShow:false, 
      subItems:[ 
      ] 
     }, 
     { 
      name:'現金管理學習', 
      imgUrl:require('../assets/images/icon-cash.png'), 
      isSubShow:false, 
      subItems:[ 
      ] 
     }, 
    ] 
   } 
  }, 
  methods:{ 
   // 點擊展開折疊菜單事件 
   showToggle:function(item,ind){ 
    this.menuList.forEach(i => { 
     // 判斷如果數據中的menuList[i]的show屬性不等于當前數據的isSubShow屬性那么menuList[i]等于false 
     if (i.isSubShow !== this.menuList[ind].isSubShow) { 
      i.isSubShow = false; 
     } 
    }); 
    item.isSubShow = !item.isSubShow; 
    console.log(item.name) 
   }, 
  } 
 } 

<style lang="scss" scoped> 
 $menuBackColor:#f1f1f1; 
 $menuListH2:#8fbfef; 
 .asideBox{ 
  height: 100%; 
  width: 300px; 
  aside{ 
   background: $menuBackColor; 
   height: 100%; 
   .asideMenu{ 
    .oneMenu{ 
     height: 50px; 
     line-height: 50px; 
     font-size: 18px; 
     font-weight: normal; 
     color: #ffffff; 
     background: $menuListH2 url("../assets/images/icon-open.png") no-repeat 280px center; 
     border-bottom: 1px solid #669cd9; 
     img{ 
      width: 20px; 
      height: 20px; 
      margin: 15px 16px 15px 20px; 
      vertical-align: top; 
     } 
    } 
    .oneMenuChild{ 
     padding: 0 20px 0 60px; 
     height: 40px; 
     line-height: 40px; 
     background: $menuBackColor; 
     border-bottom: 1px solid #ffffff; 
     color: #454343; 
     font-size: 18px; 
    } 
   } 
  } 
 } 
</style>