实现导航栏下拉菜单列表页面

1.wxml页面代码： <!--选项卡--> < view class = "tabTit box tc bg_f"> < view class = "flex1{{tab[index]?' active':''}}" wx:for = "{{tabTxt}}" wx:key = "" data-index = "{{index}}" bindtap = "filterTab"> < text >

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