Angular push key to array position

Question

I try to arrange my array. This is how it looks like:

0: Object { row: 0 }
1: Object { row: 1 }
2: Object { row: 2 }
3: Object { row: 3 }

I want to add a new key now to position 2. Should look like this:

0: Object { row: 0 }
1: Object { row: 1 }
2: Object { row: 2,newkey: 2 }
3: Object { row: 3 }

I found out how to put in right position, but not how to arrange array with new key?

This is a duplicate of [How to insert an item into an array at a specific index (JavaScript)?](https://stackoverflow.com/questions/586182/how-to-insert-an-item-into-an-array-at-a-specific-index-javascript) — Sagar V, Dec 09 '20 at 14:32
I thought that @SagarV but it looks like they are trying to add a key to an existing item — Matt, Dec 09 '20 at 14:32
@Matt oh ok. he edited his question. My answer is for first version. — Sagar V, Dec 09 '20 at 14:33
Yeah I also left an answer for the first version! Glad I'm not going crazy. — Matt, Dec 09 '20 at 14:33
SaschaK, if you are trying to add a new key to the object at position 2, use: `yourArray[2].newkey = 2;` — Matt, Dec 09 '20 at 14:34

score 2 · Accepted Answer · answered Dec 09 '20 at 14:40

2

yourArray[2]['newKey'] = 2

yourArray[2].newKey like suggested in the comments may throw an error since the property newKey doesn't exist in the object.

answered Dec 09 '20 at 14:40

João Silva

1

That won't error, the property doesn't have to exist to be assigned – Matt Dec 09 '20 at 14:41

Matt · Answer 2 · 2020-12-09T14:44:35.640

0

To assign a new key:

yourArray[2].newkey = 2;

To delete a key:

delete yourArray[2].newkey;

edited Dec 09 '20 at 14:44

answered Dec 09 '20 at 14:31

Matt

2 Answers2