java script %

Question

How can i use that in real code?

Answer 1

Suppose you have to create an image slider.

You have an image array as
var imageArr = ["img1","img2","img3"]

Now you have a variable currIndex as
var currIndex = 0;

Now, you have a button show next, this should increment currIndex but should also be in the limits of the imageArr so you will write like
currIndex = (currIndex+1)%imageArr.length

Hope, this helps.

Answer 2

% - get module (fission residue)
7 % 2 // result 1
8 % 2 // result 0

For example. You can check whether the number is even or odd.