PartsInquiry/frontend/unpackage/dist/dev/mp-weixin/pages/shell/index.wxml

<view class="shell"><keep-alive><component is="{{a}}" switch-tab="{{b}}"/></keep-alive><bottom-nav wx:if="{{d}}" bindchange="{{c}}" u-i="26537006-0" bind:__l="__l" u-p="{{d}}"/></view>