Update main-content.vue

修改tab时 清空路由传参的bug

src/views/main-content.vue

      selectedTabHandle (tab) {
        tab = this.mainTabs.filter(item => item.name === tab.name)
        if (tab.length >= 1) {
          this.$router.push({ name: tab[0].name })
          this.$router.push({ name: tab[0].name, query: tab[0].query, params: tab[0].params })
        }
      },
      // tabs, 删除tab