Remove one key from array in Javascript

Question

I have an object 'myObjects':

let myObjects = {
  "obj1":["X1","1.2"],
  "obj2": "2",
  "obj3": "3"
};

I am trying to only remove the X1 from the obj1 section. I have tried doing:

delete obj1[0];

however end up with

 [null,"1.2"]

how do I get rid of the null?

`myObjects.obj1.splice(0,1)` – MrUpsidown Nov 19 '20 at 16:16 — MrUpsidown, Nov 19 '20 at 16:16
btw... `obj1` isn't an object... it's an array. – MrUpsidown Nov 19 '20 at 16:17 — MrUpsidown, Nov 19 '20 at 16:17

score 0 · Answer 1 · answered Nov 19 '20 at 16:16

0

You are going to remove element from Array not Object. In that case, you can use Array.splice as follows.

let myObjects = {
  "obj1":["X1","1.2"],
  "obj2": "2",
  "obj3": "3"
};

delete myObjects.obj1.splice(0, 1);
console.log(myObjects);

answered Nov 19 '20 at 16:16

Derek Wang

2

Please search for duplicates instead of adding just another copy of an already written answer. – Andreas Nov 19 '20 at 16:17
@Andreas finally I feel like I am not alone, especially when looking at the JS tag... – MrUpsidown Nov 19 '20 at 16:22
1

@MrUpsidown Quality >>> Reputation :) – Andreas Nov 19 '20 at 16:23
2

What's the purpose of `delete`? – axiac Nov 19 '20 at 16:24

1 Answers1