vue 下拉框select的的分段加载解决数据过大导致页面卡顿

上篇文章介绍了select的无限加载解决方案!本篇介绍select分段加载方案

直接上代码时候filter方法过滤出自己需要的数组对象数据出来

 

      dataName: "", //活动名称/权益名称
      interestsNames: [], // 权益名称下拉数组

      activityNames: [], // 活动名称下拉数组
      // 渲染列表,限制在20个以内
      activityList: [],

 

    //解决 element-ui 下拉框过多导致卡顿问题
    //将获取的数据(activityNames)和渲染数据(activityList)分离开,限制渲染数组的长度
    filterList(query) {
      if (!query) {
        this.activityList = this.activityNames.slice(0, 100)
      } else {
        let result = []                                                        //存储符合条件的下拉选项
        this.activityNames.forEach(val => {
          if (val.data_value.indexOf(query) != -1) result.push(val)
        })
        this.activityList = result.slice(0, 100)                                 //只取前100个
      }
    },
    //权益名称/活动名称
    activity_sceneNameData() {
      let that = this;
      if (that.title === "弹窗/Banner业务转化分析") {
        that.dataName = "";
        that.activityNames = [];
        // that.$http.get(SERVERURL.activityNameData)
        request.activityNameData().then((res) => {
          that.activityNames = res.data
          console.log(res.data.length)
          that.activityList = that.activityNames.slice(0, 100)
        })
      } else {
        that.dataName = "";
        that.interestsNames = [];
        // that.$http.get(SERVERURL.interestsNameData)
        request.interestsNameData().then((res) => {
          that.interestsNames = res.data
        })
      }
    },

 下篇:验证金额正则表达式(小位数校验,千位逗号分隔字符串);若有帮助请关注!!!

posted @ 2020-10-03 14:32  Jim-vue  阅读(5318)  评论(1编辑  收藏  举报