How to insert an item into an array at a specific index (JavaScript)

Question:

b' I am looking for a JavaScript array insert method, in the style of:arr.insert(index, item)Preferably in jQuery, but any JavaScript implementation will do at this point. '

Solution : https://worcraft-algeria-dz.com/howto/38/How-to-insert-an-item-into-an-array-at-a-specific-index-(JavaScript) | Source : https://worcraft-algeria-dz.com/