JS - modify the key name of the object in the array

1. Transformation method

   /** * arr： Array  * key： new key name  * replaceKey： original key name  **/
   function replaceObjectKey(arr, key, replaceKey) {
         
     let newArr = [];
     arr.forEach((item, index) => {
         
       for (var i = 0; i < key.length; i++) {
         
         item[key] = item[replaceKey];
       }
       //  Delete original key name 
       delete item[replaceKey];
       newArr.push(item);
     });
     return newArr;
   }
   

2. Usage method ：

   let arr = [
     {
         
       id: 1,
       address: " nanjing ",
     },
     {
         
       id: 2,
       address: " Hefei ",
     },
     {
         
       id: 3,
       address: " Shanghai ",
     },
   ];
   let newArr = replaceObjectKey(arr, "label", "address");
   console.log(newArr);
   

3. Print the results