jQuery increment value of tag

Question

I have a number in a span tag. I need to get the value of the number in the span and then increment it inside jQuery. I know how to do this for a text input - can this be

Answer 1

This is the most complete answer.

1. This solution avoids selector repetition
2. Handles the increment gracefully if the span does not have a value yet.

var $number = $('.changeNumber');
$number.html((parseInt($number.html(),10) || 0) + 1);