js的几种去重方法

对象格式不能仅限于数组格式

 if (!this.cTypeList.includes(element["cTypestation"])) { 
                             this.cTypeList.push(element["cTypestation"]);                 } 

public map = new Map<number, string>()   ///初始化查询 表格数据   refresh() { 
             this.source = [];    this.VegeStatisticsEleService.getNPPQuery().subscribe(data => { 
               //区域代码cCode 去重       let set = new Set<number>();       data.forEach(d => { 
                 set.add(d.cCode);       })       //建立map表{ key:cCode value:cName}       set.forEach(item => { 
                 this.promiseArr.push(this.AreaService.getByKey(item).then(nameData => { 
        
          this.map.set(item, nameData.cName)
        }));
      })
      console.log(this.map);
    });
  }

//思路
li.isChecked=new Set(this.listOfId).has(li.id)

e//年份
let item = { 
        
      label: this.selYear.toString(),
      pngPrnStr: this.productService.makeProductName("BEHB", "VEGE", this.selYear + this.dateArr[1] + "00000000", this.selYear + this.dateArr[0] + "00000000", this.field, this.reso, "HL", "png"),
      imgPrnStr: this.productService.makeProductName("BEHB", "VEGE", this.selYear + this.dateArr[1] + "00000000", this.selYear + this.dateArr[0] + "00000000", this.field, this.reso, "HL", "img")
    }

    this.array.forEach((d, i) => { 
        
        if (d.label == e) { 
        
           this.array.splice(i, 1, item)//有相同年份数据，更新该键值
        }
      })
    if (!this.array.includes(item)) { 
        
      this.array.push(item);
    }