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August 30, 2018 09:49
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| // Plugin: jQuery.scrollSpeed | |
| // Source: github.com/nathco/jQuery.scrollSpeed | |
| // Author: Nathan Rutzky | |
| // Update: 1.0.2 | |
| (function($) { | |
| jQuery.scrollSpeed = function(step, speed, easing) { | |
| var $document = $(document), | |
| $window = $(window), | |
| $body = $('html, body'), | |
| option = easing || 'default', | |
| root = 0, | |
| scroll = false, | |
| scrollY, | |
| scrollX, | |
| view; | |
| if (window.navigator.msPointerEnabled) | |
| return false; | |
| $window.on('mousewheel DOMMouseScroll', function(e) { | |
| var deltaY = e.originalEvent.wheelDeltaY, | |
| detail = e.originalEvent.detail; | |
| scrollY = $document.height() > $window.height(); | |
| scrollX = $document.width() > $window.width(); | |
| scroll = true; | |
| if (scrollY) { | |
| view = $window.height(); | |
| if (deltaY < 0 || detail > 0) | |
| root = (root + view) >= $document.height() ? root : root += step; | |
| if (deltaY > 0 || detail < 0) | |
| root = root <= 0 ? 0 : root -= step; | |
| $body.stop().animate({ | |
| scrollTop: root | |
| }, speed, option, function() { | |
| scroll = false; | |
| }); | |
| } | |
| if (scrollX) { | |
| view = $window.width(); | |
| if (deltaY < 0 || detail > 0) | |
| root = (root + view) >= $document.width() ? root : root += step; | |
| if (deltaY > 0 || detail < 0) | |
| root = root <= 0 ? 0 : root -= step; | |
| $body.stop().animate({ | |
| scrollLeft: root | |
| }, speed, option, function() { | |
| scroll = false; | |
| }); | |
| } | |
| return false; | |
| }).on('scroll', function() { | |
| if (scrollY && !scroll) root = $window.scrollTop(); | |
| if (scrollX && !scroll) root = $window.scrollLeft(); | |
| }).on('resize', function() { | |
| if (scrollY && !scroll) view = $window.height(); | |
| if (scrollX && !scroll) view = $window.width(); | |
| }); | |
| }; | |
| jQuery.easing.default = function (x,t,b,c,d) { | |
| return -c * ((t=t/d-1)*t*t*t - 1) + b; | |
| }; | |
| })(jQuery); |
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| $(function() { | |
| // Default | |
| jQuery.scrollSpeed(100, 800); | |
| // Custom Easing | |
| jQuery.scrollSpeed(100, 800, 'easeOutCubic'); | |
| }); |
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