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replace a property or object in a object using suitable method

//some time we need deep replace of a property 

//for example in below object i want to replace year 2015 to 2019


let bigObject={

   name:"manish",

   age:31,

   salary:{

     bonus:400000,

     salary:250000,

     year:2015

   }

}

//even i can do it like

bigObject.salary.year=2020;

console.log(bigObject)


//but thats not just i want suppose i have to replace multiple properties than below method can help you out


Object.prototype.replace=function(oldkey,value)

{


   for(let key in this) {

          if(typeof this[key]==="object")

          {

             this[key].replace(oldkey,value)

          }else

          {

            if(key===oldkey)

            {

               this[key]=value;

            }

          }

    }

    return this;

}



console.log(bigObject.replace("year",2019))



//console.log give you year 2019


https://stackblitz.com/edit/myalgo

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