Element UI中v-infinite-scroll无限滚动组件使用详解

 1、v-infinite-scroll="load" //load无限滚动加载的方法
 2、infinite-scroll-disabled //是否禁用无限滚动加载
 3、infinite-scroll-delay //节流时延，单位为ms
 4、infinite-scroll-distance //触发加载的距离阈值，单位为px
 5、infinite-scroll-immediate //是否立即执行加载方法，以防初始状态下内容无法撑满容器。
 //默认情况下，infinite-scroll-disabled是false，因此如果组件使用无限滚动加载组件，即使在vue不进行加载方法的调用，组件也会调用该方法，因此如果需要控制的话，尽量是使用infinite-scroll-disabled属性来进行加载方法是否调用的控制。

<template>
  <div class="vue-class-name">
    <div
      v-infinite-scroll="load"
      :infinite-scroll-disabled="isInfiniteScrollDisabled"
      style="margin-bottom: 20px;height:640px;overflow-y:auto"
    >
      <div
        v-for="item in dataList"
        :key="item.index"
        style="display: inline-block;margin:0px 10px 10px 0px"
      >
        <span>{{item}}</span>
      </div>
      <el-empty
        description="No Data"
        v-if="dataList.length == 0"
        style="height:650px;overflow-y:auto;text-align:center"
      ></el-empty>
      
      <!-- 这个div一定要放在使用指令的div里面-->
      <div align="center" v-if="dataList.length > 0"> 
        <div class="drawer-footer">
          <span v-if="pullStatus === $enum.STATUS.START">
            Pull up to load more
          </span>
          <span v-if="pullStatus === $enum.STATUS.LOADING">
            loading
            <i class="el-icon-loading"></i>
          </span>
          <span v-if="pullStatus === $enum.STATUS.NODATA">
            no more data
          </span>
        </div>
      </div>
    </div>
  </div>
</template>
<script>
export default {
  name: 'VueName',
  mixins: [],
  components: {},
  props: {},
  data: function() {
    return {
     pullStatus: this.$enum.STATUS.START,
     pageIndex: 1,
     pageSize: 20,
     dataList: [],
     isInfiniteScrollDisabled: false,
    };
  },
  computed: {},
  watch: {
  //事件监听：当刷新浏览器页面或者切换项目的时候进行方法调用
    projectSpaceId: function(value, oldValue) {
      this.dataList = [];
      this.pageIndex = 1;
      this.pullStatus = this.$enum.STATUS.START;
      this.getLoadMoreData();
    },
  },
  created() {},
  mounted() {
  //一进入页面进行方法调用
    this.getLoadMoreData();
  },
  methods: {
    getLoadMoreData() {
      if (this.pullStatus !=  this.$enum.STATUS.START) {
       return;
       }
      this.pullStatus = this.$enum.STATUS.LOADING;
      this.isInfiniteScrollDisabled = true;
      let params = {};//请求参数，可省略
      this.getData(params).then(resp => {
        if (data.length < this.pageSize ) {
                this.pullStatus = this.$enum.STATUS.NODATA;
            } else {
                this.pageIndex++;
                this.pullStatus = this.$enum.STATUS.START;
            }
        if (resp.data.length > 0) {
          this.dataList = this.dataList.concat(resp.data);//数组拼接，得到拼接后的数据
        }
        this.isInfiniteScrollDisabled = false;
      });
    },
  },
  beforeDestroy() {
    this.dataList = []; //清空数组
};
</script>
<style scoped></style>

//常量定义
export const STATUS= {
  START: 0, // 上拉加载
  LOADING: 1, // 加载中
  NODATA: 2, // 没有更多数据
};

<div class="drawer-footer">
          <span v-if="pullStatus === $enum.STATUS.START">
            Pull up to load more
          </span>
          <span v-if="pullStatus === $enum.STATUS.LOADING">
            loading
            <i class="el-icon-loading"></i>
          </span>
          <span v-if="pullStatus === $enum.STATUS.NODATA">
            no more data
          </span>
        </div>

/** 
 * 页面无限滚动加载
*/
export default  {
    name: "infiniteScrollMixins",
    data() {
        return {
            pullStatus: this.$enum.STATUS.START,
            pageIndex: 1,
            pageSize: 20,
        }
    },
    computed:  {},
    created() {},
    methods: {
        loadMoreData() {
            if (this.pullStatus !=  this.$enum.STATUS.START) {
                return;
            }
            this.pullStatus = this.$enum.STATUS.LOADING;
            if(this.getLoadMoreData) {
            //使用该mixins的组件需要定义该方法
                this.getLoadMoreData();
            }
        },

        setPullStatus(data = []) {
            if (data.length < this.pageSize ) {
                this.pullStatus = this.$enum.STATUS.NODATA;
            } else {
                this.pageIndex++;
                this.pullStatus = this.$enum.STATUS.START;
            }
        }
    },
    beforeDestroy() {},
};