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./zh_cjdianc/pages/commons/navbar/navbar.wxml  Now you can provide attr `wx:key` for a `wx:for` to improve performance.   1 | <block wx:if="{{_navbar&&_navbar.navs&&_navbar.navs.length>0}}">   2 |     <view class="navbar flex-row" style="background-image: url({{_navbar.background_image}});border:1rpx solid {{_navbar.border_color}};bottom:{{isIpx?'40':'0'}}rpx"> > 3 |         <block wx:for="{{_navbar.navs}}">     |          ^   4 |             <navigator class="flex-grow-1 flex-y-center" openType="redirect" url="{{item.url}}" wx:if="{{item.item=='1'||item.item==null}}">   5 |                 <view>   6 |                     <image class="navbar-icon" src="{{item.active?item.logo:item.logo2}}"></image> console.warn @ VM26:1 (anonymous) @ VM158:2