Created
November 10, 2015 19:39
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JQUERY- Check Scroll funciton to see if an element is in the top of the page and refresh on scroll
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| (function($){ | |
| /* trigger when page is ready */ | |
| $(document).ready(function (){ | |
| // your functions go here | |
| var $animation_elements = $('.animation-element'); | |
| var $window = $(window); | |
| function check_if_in_view() { | |
| var window_height = $window.height(); | |
| var window_top_position = $window.scrollTop(); | |
| var window_bottom_position = (window_top_position + window_height); | |
| $.each($animation_elements, function() { | |
| var $element = $(this); | |
| var element_height = $element.outerHeight(); | |
| var element_top_position = $element.offset().top; | |
| var element_bottom_position = (element_top_position + element_height); | |
| //check to see if this current container is within viewport | |
| if ((element_bottom_position >= window_top_position) && | |
| (element_top_position <= window_bottom_position)) { | |
| $element.addClass('in-view'); | |
| } else { | |
| $element.removeClass('in-view'); | |
| } | |
| }); | |
| } | |
| $window.on('scroll resize', check_if_in_view); | |
| $window.trigger('scroll', check_if_in_view); | |
| }); | |
| /* optional triggers | |
| $(window).load(function() { | |
| }); | |
| $(window).resize(function() { | |
| }); | |
| */ | |
| })(window.jQuery); |
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