Rename JSON key in javascript

Question

hello friends i want to rename my JSON key so below i my code

 var json = '[{"Status":"Success","Data":[{"UserID":null,"UserName":null,"EmailID":null,"EmailIDExists":false,"Active":null,"Country":null,"WishListID":"31","WishListName":"General","WishListItems":[{"WishListItemID":"3","ItemCode":"4414082000005","ItemName":"Notebook 4414-082","Image":"http://aljeel.gct.om/ProductsImages/4414082000005_MT1.jpg","ItemPrice":0.500,"CreatedDate":"25/05/2018"}]},{"UserID":null,"UserName":null,"EmailID":null,"EmailIDExists":false,"Active":null,"Country":null,"WishListID":"24","WishListName":"Default","WishListItems":[]}],"Message":null}]';

var obj = JSON.parse(json)[0].Data;
obj.data = obj.WishListItems;
delete obj.WishListItems;

json = JSON.stringify([obj]);
console.log("FINAL JSON " + (json));

i want to change WatchListItem key with data key but when i run above code JSON key is not replacing any idea how can i solve this?

Data key is also an array so you may need to do var obj = JSON.parse(json)[0].Data[0]; instead — Babis.amas
– Babis.amas, Commented Jun 5, 2018 at 11:50

Rohìt Jíndal · Accepted Answer · 2018-06-06 05:46:19Z

4

Try this :

var json = '[{"Status":"Success","Data":[{"UserID":null,"UserName":null,"EmailID":null,"EmailIDExists":false,"Active":null,"Country":null,"WishListID":"31","WishListName":"General","WishListItems":[{"WishListItemID":"3","ItemCode":"4414082000005","ItemName":"Notebook 4414-082","Image":"http://aljeel.gct.om/ProductsImages/4414082000005_MT1.jpg","ItemPrice":0.500,"CreatedDate":"25/05/2018"}]},{"UserID":null,"UserName":null,"EmailID":null,"EmailIDExists":false,"Active":null,"Country":null,"WishListID":"24","WishListName":"Default","WishListItems":[]}],"Message":null}]';

var obj = JSON.parse(json)[0].Data;

console.log("Before replace", obj);

var res = obj.map(item => {
  item.data = item.WishListItems;
  delete item.WishListItems;
  return item;
});

console.log("After replace", res);

answered Jun 6, 2018 at 5:46

Rohìt Jíndal

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Comments

Red · Accepted Answer · 2018-06-05 12:22:04Z

1

obj was undefined. Changing obj to obj[0] fixed it.

var json = '[{"Status":"Success","Data":[{"UserID":null,"UserName":null,"EmailID":null,"EmailIDExists":false,"Active":null,"Country":null,"WishListID":"31","WishListName":"General","WishListItems":[{"WishListItemID":"3","ItemCode":"4414082000005","ItemName":"Notebook 4414-082","Image":"http://aljeel.gct.om/ProductsImages/4414082000005_MT1.jpg","ItemPrice":0.500,"CreatedDate":"25/05/2018"}]},{"UserID":null,"UserName":null,"EmailID":null,"EmailIDExists":false,"Active":null,"Country":null,"WishListID":"24","WishListName":"Default","WishListItems":[]}],"Message":null}]';

var obj = JSON.parse(json)[0].Data[0];

obj.data = obj.WishListItems;
delete obj.WishListItems;

json = JSON.stringify([obj]);
console.log("FINAL JSON " + (json));

edited Jun 5, 2018 at 12:22

answered Jun 5, 2018 at 11:50

Red

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6 Comments

Harshal Kalavadiya Over a year ago

with your code it remove inside WishListitem data , it is not replace WishListItems with data key

Babis.amas Over a year ago

@HarshalKalavadiya firstly he creates a new node with the name 'data' where he assignes the value from the 'WishListItems' node and then he deletes the second node, so you will have a key named data with the 'WishListItems' content. Did you try it?

Red Over a year ago

Your question is very unclear. I have no idea what you are trying to archieve.

Harshal Kalavadiya Over a year ago

@Red My question is clear i want to rename WishListItems key with data key, i already highlight those key in my question

Harshal Kalavadiya Over a year ago

Babis.amas: i tried above code but it is remove inside WishListItems array data i want to just rename WishListItems with data key

|

Jins Peter · Accepted Answer · 2018-06-05 11:53:04Z

The issue with your code is that your obj is not one object it is an array. you have to use

var obj = JSON.parse(json)[0].Data[0];

in the assignement. Or to do it for all objects

use forEach like below

    var json = '[{"Status":"Success","Data":[{"UserID":null,"UserName":null,"EmailID":null,"EmailIDExists":false,"Active":null,"Country":null,"WishListID":"31","WishListName":"General","WishListItems":[{"WishListItemID":"3","ItemCode":"4414082000005","ItemName":"Notebook 4414-082","Image":"http://aljeel.gct.om/ProductsImages/4414082000005_MT1.jpg","ItemPrice":0.500,"CreatedDate":"25/05/2018"}]},{"UserID":null,"UserName":null,"EmailID":null,"EmailIDExists":false,"Active":null,"Country":null,"WishListID":"24","WishListName":"Default","WishListItems":[]}],"Message":null}]';

JSON.parse(json)[0].Data.forEach(obj=>{
obj.data = obj.WishListItems;
    delete obj.WishListItems;
 json = JSON.stringify([obj]);
    console.log("FINAL JSON " + (json));
});

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