微信小程序自定义tabbar组件

 "tabBar": {
 "custom": true,
 "color": "red",
 "selectedColor": "#3b81d7",
 "backgroundColor": "#000000",
 "list": [{
 "pagePath": "pages/Role/InsureIndex/index",
 "text": "首页"
 }, {
 "pagePath": "pages/Role/MineIndex/index",
 "text": "首页"
 }, {
 "pagePath": "pages/index/userInfo/userInfo",
 "text": "我的"
 }]
 },

Component({
 properties: {},
 
 data: {
 indexImg: "../static/images/tabBar/tab_icon_home_nor@2x.png",
 indexSelectImg: "../static/images/tabBar/tab_icon_home_sel@2x.png",
 aboutUsImg: "../static/images/tabBar/tab_icon_user_nor@2x.png",
 aboutUsSelectImg: "../static/images/tabBar/tab_icon_user_sel@2x.png",
 _tabbat: null,
 iPhoneX: false,
 urls: ['/pages/Role/InsureIndex/index',
 '/pages/index/userInfo/userInfo'
 ]
 },
 attached() {
 var self = this
//此为业务代码，可不看
 wx.getStorage({
 key: 'userInfo',
 success: function (res) {
 const {
  userRoleCode
 } = res.data
 if (userRoleCode == '50' || userRoleCode == '70') {
  self.setData({
  ["urls[0]"]: '/pages/Role/MineIndex/index'
  })
 } else if (userRoleCode == '30' || userRoleCode == '35' || userRoleCode == '40') {
  self.setData({
  ["urls[0]"]: '/pages/Role/InsureIndex/index'
  })
 }
 }
 })
 wx.getSystemInfo({
 success(res) {
 console.log(res.model)
 if (res.model.indexOf('iPhone X') >= 0) {
  self.setData({
  iPhoneX: true
  })
 }
 }
 })
 },
 /**
 * 组件的方法列表
 */
 methods: {
 switchTap: function (e) {
 var self = this
 var index = e.currentTarget.dataset.index;
 var urls = self.data.urls
 wx.switchTab({
 url: urls[index],
 })
 }
 }
})

<div class="_tabbar {{iPhoneX?'_iPhoneX':''}}">
 <div class="titem {{_tabbat==0?'tCdk':''}}" data-index="0" bind:tap="switchTap">
 <image src="{{_tabbat==0?indexSelectImg:indexImg}}" />
 <b>首页</b>
 </div>
 <div class="titem {{_tabbat==1?'tCdk':''}}" data-index="1" bind:tap="switchTap">
 <image src="{{_tabbat==1?aboutUsSelectImg:aboutUsImg}}" />
 <b>我的</b>
 </div>
</div>

._tabbar {
 width: 100%;
 height: 120rpx;
 display: flex;
 align-items: center;
 background: #fff;
 font-size: 26rpx;
 color: #999999;
 box-shadow: 0px -7rpx 13rpx 0px rgba(193, 185, 204, 0.13);
}
 
._tabbar .titem {
 text-align: center;
 width: 50%;
}
 
._tabbar .titem image {
 display: block;
 margin: auto;
 width: 48rpx;
 height: 48rpx;
 margin-bottom: 10rpx;
}
 
._tabbar .tCdk {
 color: #37ADFE;
}
 
._iPhoneX {
 height: 148rpx;
}

{
 "component": true,
 "usingComponents": {}
}

onShow: function () {
 this.getTabBar().setData({
 _tabbat: 0
 })
 },