关于javascript:JS深拷贝

无聊写了一个深拷贝办法:

 deepCopy(arg){return  _deepCopy(arg);
          function _deepCopy(params){
            let tempResult;
            if(params instanceof Array){tempResult=[...params]
              tempResult.map((item,index)=>{item = _deepCopy(item,tempResult,index);
              })
            }else if(params  instanceof Object){tempResult={...params}
              Object.keys(tempResult).map((key,index)=>{tempResult[key]= _deepCopy(tempResult[key], tempResult,key);
              })
            }else{
              let temp=params
              return temp;
            }
            return tempResult
          }
        }
      }

let s = {

    a: {
      b: {c: '123',},
      d: [{aa: '11'}, {bb: '22'}, {cc: '33',dd:[1,2,3] }],
    },
  }
  let a=this.deepCopy(s)
  console.log(a==s)
  console.log(a===s)
  console.log(a)
  console.log(s)

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