vue怎么遍歷element樹結(jié)構(gòu)？

<el-menu

theme="dark"

:default-active="openMenuID"

:default-openeds="openMenuArr"

class="el-menu"

@select="handleSelect">

<template v-for="(item,index) in menuList">

<el-submenu :index=item.menuID v-if="item.IsContent">

<template slot="title">

<i class="el-icon-menu"></i>

{{item.name}}

</template>

<tree-menu :data="item.list"></tree-menu>

</el-submenu>

<el-menu-item :index=item.menuID v-else>{{item.name}}</el-menu-item>

</template>

</el-menu>