Vue+Node实现商品列表的分页、排序、筛选，添加购物车功能详解

<div v-infinite-scroll="loadMore" infinite-scroll-disabled="busy" infinite-scroll-distance="10">
 <img v-if="showLoading" src="../../static/loading-svg/loading-spinning-bubbles.svg">//加载的矢量动画
</div>

new Vue({
 el: '#app',
 data: {
  data: [],
  busy: false    //一开始不用加载
 },
 methods: {
  loadMore(){    //滚动加载操作
   this.busy = true;
   setTimeout(() => {
    this.page++;
    this.getGoodsList(true);
   }, 1000);
  }
 }
});

sortPrice(){    //按价格排序
   this.sortFlag=this.sortFlag==1?-1:1;
   this.page=1;
   this.getGoodsList();
}

let params={
  salePrice:{$gt:req.query.priceGt,$lt:req.query.priceLt}
 };

getGoodsList(split){
   let param={          //设置get请求的参数
    pageSize:this.pageSize,
    page:this.page,
    sortFlag:this.sortFlag,
    priceGt:this.priceGt,
    priceLt:this.priceLt
   };
   this.showLoading=true;     //启用加载svg动画
   axios.get("/goods",{
     params:param
   }).then(response =>{
    let res=response.data;
    if(res.status==0){
     if(split){         //split==true，需要滚动追加页数
      this.goodsList=this.goodsList.concat(res.result.list);
      if(res.result.count==0){  //返回0条数据，禁用滚动
       this.busy=true;
      }else{
       this.busy = false;
      }
     }else{
      this.goodsList=res.result.list;
     }
    }else{
     console.log("从服务器请求数据失败！");
    }
   });

router.get('/',(req,res,next)=>{
 //获取get请求中的参数
 let pageSize=parseInt(req.query.pageSize);
 let page=parseInt(req.query.page);
 let sortFlag=req.query.sortFlag;
 let skipPiece=(page-1)*pageSize;        //分页查询，跳过前面skip条数据
 let params={
  salePrice:{$gt:req.query.priceGt,$lt:req.query.priceLt}
 };
 //利用goods模板调用mongooseAPI进行数据库查询、排序、跳到指定页
 let goodsModel=goods.find(params).sort({'salePrice':sortFlag}).skip(skipPiece).limit(pageSize);
 goodsModel.exec((err,goodsDoc)=>{
  "use strict";
  if (err){
   res.json({
    status:1,
    msg:err.message
   })
  }else {
   res.json({                //利用res将查询结果返回
    status:0,
    msg:'',
    result:{
     count:goodsDoc.length,
     list:goodsDoc
    }
   })
  }
 })
});