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Posted By

realpeterz on 06/01/11

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Last Edited at 06/01/11 12:23pm

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Smooth Scrolling

Smooth Scrolling

/ Published in: jQuery
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Copy this code and paste it in your HTML 
  1. $(document).ready(function() {
  2.   function filterPath(string) {
  3.   return string
  4.     .replace(/^\//,'')
  5.     .replace(/(index|default).[a-zA-Z]{3,4}$/,'')
  6.     .replace(/\/$/,'');
  7.   }
  8.   var locationPath = filterPath(location.pathname);
  9.   var scrollElem = scrollableElement('html', 'body');
  10.  
  11.   $('a[href*=#]').each(function() {
  12.     var thisPath = filterPath(this.pathname) || locationPath;
  13.     if (  locationPath == thisPath
  14.     && (location.hostname == this.hostname || !this.hostname)
  15.     && this.hash.replace(/#/,'') ) {
  16.       var $target = $(this.hash), target = this.hash;
  17.       if (target) {
  18.         var targetOffset = $target.offset().top;
  19.         $(this).click(function(event) {
  20.           event.preventDefault();
  21.           $(scrollElem).animate({scrollTop: targetOffset}, 400, function() {
  22.             location.hash = target;
  23.           });
  24.         });
  25.       }
  26.     }
  27.   });
  28.  
  29.   // use the first element that is "scrollable"
  30.   function scrollableElement(els) {
  31.     for (var i = 0, argLength = arguments.length; i <argLength; i++) {
  32.       var el = arguments[i],
  33.           $scrollElement = $(el);
  34.       if ($scrollElement.scrollTop()> 0) {
  35.         return el;
  36.       } else {
  37.         $scrollElement.scrollTop(1);
  38.         var isScrollable = $scrollElement.scrollTop()> 0;
  39.         $scrollElement.scrollTop(0);
  40.         if (isScrollable) {
  41.           return el;
  42.         }
  43.       }
  44.     }
  45.     return [];
  46.   }
  47.  
  48. });

URL: http://css-tricks.com/snippets/jquery/smooth-scrolling/

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