js 手写深拷贝

function deepClone(someobj){
    let cloneObj;
    //简单数据类型时
    if(typeof someobj!=‘object‘){ cloneObj=someobj}
    else if(someobj&&typeof someobj==‘object‘){
         cloneObj=Array.isArray(someobj)?[]:{};
         //遍历对象属性
         for(let key in someobj){
              //过滤掉对象原型上的属性
              if(someobj.hasOwnPrototype(key)){
                   if(someobj[key]&&typeof(someobj[key])==‘object‘){
                        cloneObj[key]=deepClone(someobj[key]);
                   }
                   else{
                       cloneObj[key]=someobj[key]
                   }
              }
         }
    }
    return cloneObj;
}