How to insert an item into an array at a specific index?
arrays, javascript
Solution
You want the `splice` function on the native array object.
`arr.splice(index, 0, item);` will insert `item` into `arr` at the specified `index` (deleting `0` items first, that is, it's just an insert).
In this example we will create an array and add an element to it into index 2:
var arr = [];
arr[0] = "Jani";
arr[1] = "Hege";
arr[2] = "Stale";
arr[3] = "Kai Jim";
arr[4] = "Borge";
console.log(arr.join()); // Jani,Hege,Stale,Kai Jim,Borge
arr.splice(2, 0, "Lene");
console.log(arr.join()); // Jani,Hege,Lene,Stale,Kai Jim,Borge
Problem
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.