Posted By

danielwrobert on 01/10/11

Tagged

javascript

Versions (?)

Last Edited at 01/10/11 04:54pm

Statistics

Viewed 809 times

Favorited by 1 user(s)

Related snippets

JavaScript For Loop

/ Published in: JavaScript

I saw this useful little variation of a for loop in a tutorial by Kevin Yank at Sitepoint. By adding an additional variable "ii" in the loop's arguments, you can avoid having your program calculate the length of your array every time it loops through. Saves on processing. Delightful.

Expand | Embed | Plain Text

Copy this code and paste it in your HTML

var numbers = [1, 2, 3, 4, 5];
 
for (var i = 0, var ii = numbers.length;  i  <  ii;  i++)
{
  numbers[i] *= 2;
}
 
alert("The last item in the array is " + numbers[numbers.length - 1]);

URL: http://www.sitepoint.com

Report this snippet Tweet

Comments

Subscribe to comments

Comment:

You need to login to post a comment.