重命名javascript中的JSON键

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?

Answer 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)); 

Answer 2

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); 

Answer 3

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));
});