Vue批量修改List中的某个值

第一种方式：

let dataList=[];  //数据集合
let dataListSelections=[];   //多选的集合

for (let i = 0; i < this.dataListSelections.length; i++) {
     const row = this.dataListSelections[i];
     for (let j = 0; j < this.dataList.length; j++) {
        const element = this.dataList[j];
        if(row.tenderid===element.tenderid){
             this.$set(this.dataList[j],'pledgeType',this.state)
             this.$set(this.dataList[j],'pledgeDate',this.pledgeTime)
         }                        
      }                    
   }  

第二种方式

this.dataListSelections.forEach(row=>{
    this.dataList.forEach(el=>{
      if(row.costId===el.costId){
       this.$set(el,'sendBack',this.sendback)
       this.$set(el,'sendBackDate',this.sendBackUpDate)
      }
   })
 })