How to replace an item in an array with JavaScript?

Question

Each item of this array is some number.

var items = Array(523,3452,334,31, ...5346);

How do I replace some number in with array with a new on

Answer 1

First, rewrite your array like this:

var items = [523,3452,334,31,...5346];

Next, access the element in the array through its index number. The formula to determine the index number is: n-1

To replace the first item (n=1) in the array, write:

items[0] = Enter Your New Number;

In your example, the number 3452 is in the second position (n=2). So the formula to determine the index number is 2-1 = 1. So write the following code to replace 3452 with 1010:

items[1] = 1010;