手写一个翻页功能

最近在对接海康摄像头，需要写一个翻页得功能，于是乎就想到了手写，然后就记录一下。在vue项目里写的

 <img:src="require('')"alt=""@click="onNext('delete')"/><img:src="require('')"alt=""@click="onNext('add')"/>

iDIndex: 0,onNext(type) {/*** console.log('getIChannelID', this.getIChannelID);* getIChannelID（所有硬盘录像机得通道号）*/if (type === "add") {this.iDIndex++;} else {if (this.iDIndex == 0) {return;}this.iDIndex--;}WebVideoCtrl.I_StopAllPlay();this.$nextTick(() => {const total = this.page * this.page; //窗口数量let numWindow = total * this.iDIndex; //当前窗口第几页const length = total * (this.iDIndex + 1); // 当前页到下一页得数量let index = total * this.iDIndex;console.log("total:",total,"numWindow",numWindow,"length:",length,"index:",index);for (numWindow; numWindow < length; numWindow++) {if (this.groupVideoList.length > numWindow) {this.clickStartRealPlay(this.groupVideoList[numWindow].webChannel,numWindow - index,this.groupVideoList[numWindow].webUserId);}}});
},