vue 实现滚动到底部翻页效果(pc端)

pc端vue滚动到底部翻页效果，具体内容如下所示：html：<divclass="list"ref="scrollTopList"><di

pc端vue 滚动到底部翻页 效果，具体内容如下所示：

html：

<div class="list" ref="scrollTopList">
 <div class="listsmall" v-for="(item,index) of list" :key="index" @click="getDeviceInfo(item.id)">
 <span class="state" :class="{'state1':item.status==1,'state0':item.status==0,'state2':item.status==2,'state3':item.status==3}"></span>
 <span class="text textcolor">【{{item.code||item.name}}】</span>
 <span class="text">{{item.name}}</span>
 </div>
 </div>

js:

先写滚动事件

handleScroll(){
 let scrollTop = this.$refs.scrollTopList.scrollTop, 
 clientHeight = this.$refs.scrollTopList.clientHeight, 
 scrollHeight = this.$refs.scrollTopList.scrollHeight,
 height = 50; //根据项目实际定义
 if(scrollTop +clientHeight >= scrollHeight - height){
 if(this.pageSize > this.total){
 return false
 }else{
 this.pageSize = this.pageSize +10 //显示条数新增
 this.getpageList() //请求列表list 接口方法
 } 
 }else{
 return false
 }
 },

method中写节流函数

throttle(func, wait) {
 let lastTime = null
 let timeout
 return () => {
 let context = this;
 let now = new Date();
 let arg = arguments;
 if (now - lastTime - wait > 0) {
 if (timeout) {
 clearTimeout(timeout)
 timeout = null
 }
 func.apply(context, arg)
 lastTime = now
 } else if (!timeout) {
 timeout = setTimeout(() => {
 func.apply(context, arg)
 }, wait)
 }
 }
 },

mounted中调用

mounted(){
this.$refs.scrollTopList.addEventListener("scroll",this.throttle(this.handleScroll,500),true)
},

//-------------------------------------------------------------------------------------------第二种写法

html:

添加滚动事件

<div class="tablelist-box" @scroll="scrollEvent($event)">
 <div
 class="tablelist"
 :class="{'active':listDevicesDetailIndex==index}"
 v-for="(item,index) of deviceList"
 :key="index"
 v-if="deviceList.length !== 0"
 @click="deviceDetail(item,index)"
 >
 <span class="tablelist-status">
 <i
 :class="{zx:item.status==1,lx:item.status==2, wjh:item.status==0,gj:item.status==3}"
 ></i>
 </span>
 <span class="tablelist-bg">{{item.code != null ?item.code:"/"}}</span>
 </div>
 <div class="list-more" v-show="!deviceListIsFinish">{{deviceTip}}</div>
 <div class="list-more" v-show="deviceListIsFinish">{{deviceTip}}</div>
 </div>

 css:

tablelist-box{
 height: //根据实际项目取
 overflow:auto //必须 不然判断有问题
}

css 定义

js

写入滚动事件

scrollEvent(e) {
 if (e instanceof Event) {
 let el = e.target;
 let scrollTop = el.scrollTop;
 // 获取可视区的高度
 let clientHeight = el.clientHeight;
 // 获取滚动条的总高度
 let scrollHeight = el.scrollHeight;
 let height = 50;
 //到底了
 // console.log(this.deviceListIsLoad, this.deviceListIsFinish);
 // console.log(scrollTop, clientHeight, scrollHeight);
 //是否继续加载且已完成加载
 if (
 scrollTop + clientHeight >= scrollHeight &&
 this.deviceListIsLoad &&
 !this.deviceListIsFinish
 ) {
 // 把距离顶部的距离加上可视区域的高度 等于或者大于滚动条的总高度就是到达底部
 this.deviceListIsLoad = true;
 console.log("到底了");
 setTimeout(() => {
 this._deviceListPage();
 }, 1000);
 }
 }

请求列表的处理

 _deviceListPage() {
 let params = {
 pageSize: this.devicePageSize,
 pageNum: this.devicePageNum,
 kw: "", //查询条件（通配查询条件）
 type: this.deviceType, //设备类型（下拉）2.1.6接口获取
 code: this.deviceCode, //设备编号
 areaId: this.deviceareaId, //位置区域
 status: this.deviceStatus, //状态 1：在线（正常），0：未激活，2已离线，3.告警
 imei: "" //imei编号
 };
 deviceListPage(params).then(res => {
 if (res.code == 200) {
 this.devicePageTotal = res.body.total;
 this.devicePageSize = res.body.pageSize;
 this.devicePageNum = res.body.pageNum;
 this.devicePageTotalPages = parseInt(
 (this.devicePageTotal + this.devicePageSize - 1) /
 this.devicePageSize
 );
 if (this.devicePageTotal == 0) {
 // console.log("没有数据");
 //没有数据
 this.deviceListnodata = true;
 this.deviceListIsLoad = false;
 this.deviceListIsFinish = true;
 this.devicePageNum = 1;
 this.deviceTip = "暂无数据";
 return false;
 }
 this.deviceList = this.deviceList.concat(res.body.datas);
 // console.log(this.devicePageNum, this.devicePageTotalPages);
 if (this.devicePageNum == this.devicePageTotalPages) {
 //没有更多
 this.deviceListIsLoad = false;
 this.deviceListIsFinish = true;
 this.devicePageNum = 1;
 this.deviceTip = "没有更多了~";
 // console.log("没有更多了");
 } else {
 // console.log("下一页");
 //下一页
 this.deviceListIsLoad = true;
 this.deviceListIsFinish = false;
 this.devicePageNum++;
 this.deviceTip = "正在加载中~";
 }
 // console.log("deviceList", this.deviceList);
 } else {
 // this.deviceList = [];
 this.deviceListIsLoad = false;
 this.deviceListIsFinish = true;
 this.devicePageNum = 1;
 this.deviceTip = "数据加载失败~";
 }
 });
 },

return中的定义

devicePageSize: 10, //每页显示
 devicePageNum: 1, //当前页
 devicePageTotal: 0, //总条数
 devicePageTotalPages: 0, //总页数
 deviceListIsFinish: false, //是否加载完成
 deviceListIsLoad: false, //是否加载更多
 deviceListnodata: false, //是否有数据
 deviceTip: "",

总结

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