1. for (let i = a.length-1; i >= 0; i--) {
    2.       if(a[i]===3){
    3.         console.log(i);
    4.         a.splice(i,1);
    5.       }
    6.  }
    7. console.log(a);//[0]
    1. const deps = {
    2.     '采购部':[1,2,3],
    3.     '人事部':[5,8,12],
    4.     '行政部':[5,14,79],
    5.     '运输部':[3,64,105],
    6. }
    7. let member = Object.values(deps).flat(Infinity);
    1. let hash = {}; 
    2. data = data.reduce((preVal, curVal) => {
    3.     hash[curVal.id] ? '' : hash[curVal.id] = true && preVal.push(curVal); 
    4.     return preVal 
    5. }, [])
    1.     const array = JSON.parse(JSON.stringify(this.groupServiceListSearch));
    2.     this.groupServiceList = array.filter(item => {
    3.       item.groupServices = item.groupServices.filter(itemChild => {
    4.         itemChild.items = itemChild.items.filter(res => res.name.includes(childName));
    5.         return itemChild.items?.length > 0;
    6.       });
    7.       return item.groupServices?.length > 0;
    8.     });