vue2使用el-tag实现自定义菜单导航标签

<div class="tabs-container" v-horizontal-scroll></div>

export default {
  directives: {
    "horizontal-scroll": {
      bind: function (el) {
        el.addEventListener("wheel", function (event) {
          event.preventDefault();
          el.scrollLeft += event.deltaY;
        });
      },
    },
  },
}

<style lang="scss" scoped>
.tabs-container {
  width: 100%;
  height: 100%;
  overflow-x: scroll;
  overflow-y: hidden;
  white-space: nowrap;
  display: flex;}
.tabs-container::-webkit-scrollbar {
  display: none;
}
</style>

  watch: {
    // 监听当前路由
    $route: {
      immediate: true,
      handler(val, oldval) {
        console.log(val, "路由");
        const bool = this.tagsData.find((item) => val.path == item.path);
        if (!bool) {
          this.tagsData.push({
            title: val.meta.title,
            path: val.path,
          });
        }
        console.log(this.tagsData, "路由地址");
      },
    },
    tagsData: {
      immediate: true,
      handler(val, oldval) {
        return;
      },
    },
  },

   <el-tag
      class="tag"
      size="medium"
      :closable="index > 0"
      v-for="(item, index) in tagsData"
      :key="item.path"
      @click="goPath(item.path)"
      @close="close(index)"
      :effect="item.title == $route.meta.title ? 'dark' : 'plain'"
      @contextmenu.native.prevent="rightClick($event, index)"
    >
      <i class="cir" v-show="item.title == $route.meta.title"></i
      >{{ item.title }}
    </el-tag>

  .tag {
    cursor: pointer;
    margin-right: 5px;
    height: 37px;
    line-height: 34px;
    font-size: 16px;
    .cir {
      width: 8px;
      height: 8px;
      margin-right: 4px;
      background-color: #fff;
      border-radius: 50%;
      display: inline-block;
    }
  }

    // 点击标签跳转
    goPath(path) {
      // 解决重复点击会报错，数据冗余
      if (path !== this.$route.path) {
        this.$router.push(path);
      }
      this.closeMenus();
    },

    close(i) {
      if (
        this.tagsData[i].path == this.$route.path &&
        i !== this.tagsData.length - 1
      ) {
        // 直接跳转到最后一项了
        this.$router.push(this.tagsData[this.tagsData.length - 1].path);
      } else if (i === this.tagsData.length - 1) {
        this.$router.push(this.tagsData[this.tagsData.length - 2].path);
      }
      // 关闭当前项，本质上就是删除tags的对应项
      this.tagsData.splice(i, 1);
      this.closeMenus();
    },

  mounted() {
    // 给文档添加点击事件
    document.addEventListener("click", this.closeMenus);
  },
  methods: {
    // 关闭选择菜单
    closeMenus() {
      this.isShowTagsMenu = false;
    },
}