MD_YOSwechat/custom-tab-bar/index.wxml

<van-tabbar active="{{ active }}" placeholder active-color='#3874F6' bindchange="onChange">
    <van-tabbar-item wx:if="{{per.query(Permission,item.text)}}" info="{{item.fcount}}" name="{{item.name}}" wx:for="{{tabbarList}}" wx:key="index">
        <text slot='icon' class="{{'iconfont '+item.icon}}" style="font-size: 44rpx; color: #999999;" />
        <text slot='icon-active' class="{{'iconfont '+item.icon}}" style="font-size: 44rpx; color: #3874F6;" />
        {{item.text}}
    </van-tabbar-item>
</van-tabbar>

<wxs module="per">
    function query(list, name) {
        // console.log(list.includes(name))
        return a1 = list.some(function (v) {
            return v == name
        });
    };

    module.exports.query = query
</wxs>