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JavaScript - insert item into array at specific index

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Created by:
starcraf35
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In this article, we would like to show you how to insert item into array at specific index using JavaScript.

Quick solution:

Note:

The second argument - 0 is the number of items to delete while inserting the item.

 

Practical example

Edit

In this example, we extend the Array object by adding custom insert() method that accepts 2 arguments: index at which we want to insert the item, and the item.

 

References

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  1. Array.prototype.splice() - JavaScript | MDN
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