实现效果

当我在首页和原创两个菜单之间切换的时候，下面显示不同的内容

 

父组件wxml

<Tabs tabsss="{{tabs111}}" bind:itemChange="handle_itemChange" class="Tabs">
    <block wx:if="{{tabs111[0].isActive}}">哈哈哈</block>
    <block wx:elif="{{tabs111[1].isActive}}">嗯嗯嗯</block>
    <block wx:elif="{{tabs111[2].isActive}}">呃呃呃</block>
    <block wx:else="{{tabs111[3].isActive}}">嘿嘿嘿</block>
</Tabs>

父组件js

Page({
  /**
   * 页面的初始数据
   */
  data: {
    tabs111: [
      {
        id: 0,
        name: "首页",
        isActive: true
      },
      {
        id: 1,
        name: "原创",
        isActive: false
      },
      {
        id: 2,
        name: "分类",
        isActive: false
      },
      {
        id: 3,
        name: "关于",
        isActive: false
      }
    ]
  },

  // 自定义事件，用来接收子组件传递的数据的
  handle_itemChange(e) {
    console.log(e)
    const index = e.detail
    // console.log(index)
    let tabs = JSON.parse(JSON.stringify(this.data.tabs111))

    tabs.forEach((item, index111) => {
      index111 === index ? item.isActive = true : item.isActive = false
    })

     // 重新赋值
     this.setData({
      tabs111: tabs
    })
  },
  onl oad: function (options) {

  }
})

子组件 Tabs.wxml

<view class="tabs">
  <view class="tabs_title">
    <!-- data-index  自定义属性事件传参 -->
    <view
      wx:for="{{tabsss}}"
      wx:key="id"
      class="title_item {{item.isActive?'active':''}}"
      bindtap="_handle_item_tap"
      data-index="{{index}}"
    >
      {{item.name}}
    </view>
  </view>
  <view class="tabs_content">
    <slot></slot>
  </view>
</view>

子组件Tabs.js

Component({
  properties: {
    tabsss: {
      type: Array,
      value: []
    }
  },
  data: { 
  
  },
  methods: {
    _handle_item_tap(e) {
      const index222 = e.currentTarget.dataset.index
      this.triggerEvent("itemChange",index222)
    }
  }
})

子组件Tabs.wxss

.tabs_title {
  display: flex;
  padding: 10rpx;
}

.title_item {
  display: flex;
  flex:1;
  justify-content: center;
  align-items: center;
}

.active {
  color: red;
  border-bottom: 5rpx solid currentColor;
}