jQuery - Scroll Function Keeps Triggering: Only Once Please

Question

I have the following jQuery function which triggers aTestEvent() when the user scrolls horizontally past 500 pixels:

jQuery(document).scroll(functio         


        

Answer 1

You can use on and off methods:

$(document).on('scroll', function() {
    if( $(this).scrollLeft() >= 500 ) {
        $(document).off('scroll');
        aTestEvent();
    }
});

http://jsfiddle.net/3kacd/

Please Note: This code snippet could "off" all the scroll event available on a particular page but to scroll off only intended scroll handler without disturbing other scroll handlers, we can use a namespace. Namespaces are similar to CSS classes in that they are not hierarchical; only one name needs to match.

$(document).on('name1.scroll', function() {
    if( $(this).scrollLeft() >= 500 ) {
        $(document).off('name1.scroll');
        aTestEvent();
    }
});

http://jsfiddle.net/shekhardtu/3kacd/57/