How to insert an item into an array at a specific index

0 votes

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.

Sep 10, 2020 in JQuery by kartik
• 37,490 points
131 views

1 answer to this question.

0 votes

Hello @kartik,

You can implement the Array.insert method by doing this:

Array.prototype.insert = function ( index, item ) {
    this.splice( index, 0, item );
};

Then you can use it like:

var arr = [ 'A', 'B', 'D', 'E' ];
arr.insert(2, 'C');

// => arr == [ 'A', 'B', 'C', 'D', 'E' ]

Hope it helps!!
Thank you!!

answered Sep 10, 2020 by Niroj
• 82,580 points

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