How do i use javascript increments and decrements?!?!?

Xpocalypse · October 17th, 2010, 06:51 AM

Hi, i have just begain learning javascript, and i came accross to a part in a book what i didn't understand. Help is much appreciated if this can be solved.

myvar = myvar + 1;

what i don't understand, is how can a var = var and add one when it's not a number. !?!?

Old Pedant · October 18th, 2010, 03:01 PM

If it's not a number, what is it? If it's a string, it will work, but it will then just append "1" to the end of the string.

That is, if you do:

Code:

var myvar = "help";
myvar = myvar + 1;
alert(myvar); // will show "help1"