- 当前 Bug 的表现（可附上截图） - 预期表现 - 复现路径 - 提供一个最简复现 Demo 初始化 selecttt: 0, 点击我的,会在一瞬间回到首页,点击其他的tabbar也是一样,  只有连续点击两次,才会正确显示,当点击另外一个,但是显示图标还是不会过来,路径正常显示,只是icon图标会慢一步 Component({ data: { selecttt: 0, color: "#333333", backgroundColor: "#fbfbfb", selectedColor: "#4bc4f7", borderStyle: "white", list: [{ pagePath: "/pages/index/index", iconPath: "/images/index.png", selectedIconPath: "/images/sindex.png", text: "首页" }, { pagePath: "/pages/shop/shop", iconPath: "/images/shop.png", selectedIconPath: "/images/sshop.png", text: "商城" }, { pagePath: "/pages/serve/serve", text: "服务", iconPath: "/images/serve.png", selectedIconPath: "/images/sserve.png" }, { pagePath: "/pages/my/my", text: "我的", iconPath: "/images/mmy.png", selectedIconPath: "/images/smmy.png" }] }, attached() { }, methods: { switchTab(e) { const data = e.currentTarget.dataset const url = data.path wx.switchTab({ url }) this.setData({ selecttt: data.index }) } } }) wxml部分 <cover-view class="tab-bar"> <cover-view class="tab-bar-border"></cover-view> <cover-view wx:for="{{list}}" wx:key="index" class="tab-bar-item" data-path="{{item.pagePath}}" data-index="{{index}}" id='{{index}}'  bindtap="switchTab"> <cover-image src="{{selecttt === index ? item.selectedIconPath : item.iconPath}}"></cover-image> <cover-view style="color: {{selecttt === index ? selectedColor : color}}">{{item.text}}</cover-view> </cover-view> </cover-view>

- 当前 Bug 的表现（可附上截图） [图片] - 预期表现 不报红 - 复现路径 - 提供一个最简复现 Demo Component({     data: {         selected: 0,         color: "#333333",         backgroundColor: "#fbfbfb",         selectedColor: "#4bc4f7",         borderStyle: "white",         list: [{                 "pagePath": "/pages/index/index",                 "iconPath": "/static/img/index.png",                 "selectedIconPath": "/static/img/sindex.png",                 "text": "首页"            }, {                 "pagePath": "/pages/serve/serve",                 "iconPath": "/static/img/serve.png",                 "selectedIconPath": "/static/img/sserve.png",                 "text": "服务"             }, {                 "pagePath": "/pages/my/my",                 "iconPath": "/static/img/mmy.png",                 "selectedIconPath": "/static/img/smmy.png",                 "text": "我的"         }] }, attached() { }, methods: {     switchTab(e) {             var _this=this             const data = e.currentTarget.dataset             console.log(data)             const url = data.path                     wx.switchTab({                                 url                                     })         _this.setData({             selected: data.index                     })                 }         } }) 这是tab-bar组件的js部分 <cover-view class="tab-bar">         <cover-view wx:for="{{list}}" wx:key="{{index}}" class="tab-bar-item" data-path="{{item.pagePath}}" data-index="{{index}}" bindtap="switchTab">                     <cover-image src="{{selected === index ? item.selectedIconPath : item.iconPath}}"></cover-image>                     <cover-view style="color: {{selected === index ? selectedColor : color}}">{{item.text}}</cover-view>         </cover-view> </cover-view> 这是wxml部分 分别在三个tab的onShow生命周期中添加了 if (typeof this.getTabBar === "function" && this.getTabBar()) {         this.getTabBar().setData({                     selected: 0                     }) }