Question

I have a little DIV like this:

<div id="counter">2</div>

I’d like to use jQUery to either subtract or add by let say 1, resulting in 3 or 1…

is there a way in jquery to do this? convert a string to a int maybe?

Answer 1

$('#counter').text(function(i,txt) { return parseInt(txt, 10) + 1; });

Example for addition: http://jsfiddle.net/2uBMy/

Example for subtraction: http://jsfiddle.net/2uBMy/1/

To add a check for negative, you could do this:

$('#counter').text(function(i,txt) {
    var result = parseInt(txt, 10) - 1;
    return (result > 0) ? result : 0; 
});