let array = [1, 2, 3, 4, 5];


array.forEach((num, index, arr) => {
  arr[index] = num * 2;

  console.log(array);
});

downloadDownload PNG downloadDownload JPEG downloadDownload SVG

Tip: You can change the style, width & colours of the snippet with the inspect tool before clicking Download!

Click to optimize width for Twitter