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)

``