2 lines
1.4 KiB
JavaScript
2 lines
1.4 KiB
JavaScript
(function(e){"use strict";var t="ScrollIt",n="1.0.3";var r={upKey:38,downKey:40,easing:"linear",scrollTime:600,activeClass:"active",onPageChange:null,topOffset:0};e.scrollIt=function(t){var n=e.extend(r,t),i=0,s=e("[data-scroll-index]:last").attr("data-scroll-index");var o=function(t){if(t<0||t>s)return;var r=e("[data-scroll-index="+t+"]").offset().top+n.topOffset+1;e("html,body").animate({scrollTop:r,easing:n.easing},n.scrollTime)};var u=function(t){var n=e(t.target).closest("[data-scroll-nav]").attr("data-scroll-nav")||e(t.target).closest("[data-scroll-goto]").attr("data-scroll-goto");o(parseInt(n))};var a=function(t){var r=t.which;if(e("html,body").is(":animated")&&(r==n.upKey||r==n.downKey)){return false}if(r==n.upKey&&i>0){o(parseInt(i)-1);return false}else if(r==n.downKey&&i<s){o(parseInt(i)+1);return false}return true};var f=function(t){if(n.onPageChange&&t&&i!=t)n.onPageChange(t);i=t;e("[data-scroll-nav]").removeClass(n.activeClass);e("[data-scroll-nav="+t+"]").addClass(n.activeClass)};var l=function(){var t=e(window).scrollTop();var r=e("[data-scroll-index]").filter(function(r,i){return t>=e(i).offset().top+n.topOffset&&t<e(i).offset().top+n.topOffset+e(i).outerHeight()});var i=r.first().attr("data-scroll-index");f(i)};e(window).on("scroll",l).scroll();e(window).on("keydown",a);e("body").on("click","[data-scroll-nav], [data-scroll-goto]",function(e){e.preventDefault();u(e)})}})(jQuery)
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