vant list列表页点击搜索删选，load方法触发多次
onLoad(isSearch){
if(isSearch){
this.pageNum=1;
this.finished=true;
this.list=[];
}
var params={
pageNo:this.pageNum,
pageSize:this.pageSize,
}
接口地址xxx(params).then(res => {
if(res.code==200){
this.total=res.data.total;
if(isSearch){
this.list = res.data;
//这里一定要设置为false;
this.finished = false;
}else{
this.list = this.list.concat(res.data);
}
this.loading = false;
this.pageNum+=1;
// 数据全部加载完成
if (this.list.length >= this.total) {
this.finished = true;
}
}else{
this.$toast(res.message);
}
}).catch(err => {
console.log(err)
})
},