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004_comission/dreamtech.hk/mtHK.github.io-main/js/element-in-view.js
louiscklaw 13fc51f998 update,
2025-01-31 19:41:00 +08:00

42 lines
1.4 KiB
JavaScript

(function($) {
/**
* Copyright 2012, Digital Fusion
* Licensed under the MIT license.
* http://teamdf.com/jquery-plugins/license/
*
* @author Sam Sehnert
* @desc A small plugin that checks whether elements are within
* the user visible viewport of a web browser.
* only accounts for vertical position, not horizontal.
*/
$.fn.visible = function(partial) {
var $t = $(this),
$w = $(window),
viewTop = $w.scrollTop(),
viewBottom = viewTop + $w.height(),
_top = $t.offset().top,
_bottom = _top + $t.height(),
compareTop = partial === true ? _bottom : _top,
compareBottom = partial === true ? _top : _bottom;
return ((compareBottom <= viewBottom) && (compareTop >= viewTop));
};
})(jQuery);
$(window).on('scroll', function() {
$(".testimonial-author .author-one, .testimonial-author .author-two, .testimonial-author .author-three, .testimonial-author .author-four, .testimonial-author .author-five, .testimonial-avatar .avatar-one, .testimonial-avatar .avatar-two, .testimonial-avatar .avatar-three, .testimonial-avatar .avatar-four, .testimonial-avatar .avatar-five, .testimonial-avatar .avatar-six").each(function(i, el) {
var el = $(el);
if (el.visible(true)) {
el.addClass("now-in-view");
} else {
el.removeClass("now-in-view");
}
});
});