Clear SetTimeout Scroll Jquery Javascript

Clear SetTimeout Scroll Jquery Javascript.js

// view source here: http://stackoverflow.com/questions/5632380/settimeout-solution-on-twitter

// basically, clearing a settimeout everytime the user scrolls, so the action isn't actually executed
//until the user stops scrolling

var $clear = null;
$(window).on('scroll',function() { 
	var $h2Span = $('.portfolio-page .top-content h2 span');

    $h2Span.addClass('dotted-line');


    if ($clear) {
        clearTimeout($clear);
    }            

    $clear = setTimeout(function() { 
        $h2Span.removeClass('dotted-line'); 
    }, 600);
});