web-base-h5/components/backIcon.vue

<!--
 * @Descripttion: 
 * @version: 
 * @Author: kBank
 * @Date: 2022-11-21 16:46:09
-->
<template>
  <view class="navBar"
        @tap="toBack">
    <u-icon name="arrow-left"
            size="14"
            color="#333"></u-icon>
  </view>

</template>

<script>
export default {
  name: 'navBar',
  props:['diff'],
  data() {
    return {}
  },
  mounted() {},
  methods: {
    toBack() {
      let pages = getCurrentPages()
      let prevPage = pages[pages.length - 1]
      // 分享进来
      if (prevPage.route == 'pages/index/goodsDetails/index') {
        uni.switchTab({ url: '/pages/index/index' })
        //海粉列表
      } else {
        if (this.diff == 0) {
          uni.switchTab({ url: '/pages/specialArea/index' })
        } else if (this.diff == 1) {
          uni.switchTab({ url: '/pages/index/index' })
        }else if (this.diff == 2) {
          uni.navigateBack()
        } else {
          if(pages[pages.length - 2]&&pages[pages.length - 2].route){
            uni.navigateBack()
          }else{
            uni.switchTab({ url: '/pages/index/index' })
          }
            // uni.navigateBack()
        }
      }
    },
  },
}
</script>

<style lang="scss" scoped>
.navBar {
  position: fixed;
  margin: 14rpx 24rpx;
  z-index: 500;
  width: 28px;
  height: 28px;
  background: rgba(255, 255, 255, 0.7);
  border-radius: 14px 14px 14px 14px;
  display: flex;
  justify-content: center;
  align-items: center;
}
</style>