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jquery.localScroll.js
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jquery.localScroll.js
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/*!
* jQuery.localScroll
* Copyright (c) 2007-2013 Ariel Flesler - aflesler<a>gmail<d>com | http://flesler.blogspot.com
* Licensed under MIT
* http://flesler.blogspot.com/2007/10/jquerylocalscroll-10.html
* @author Ariel Flesler
* @version 1.3.1
*/
;(function( $ ){
var URI = location.href.replace(/#.*/,''); // local url without hash
var $localScroll = $.localScroll = function( settings ){
$('body').localScroll( settings );
};
// Many of these defaults, belong to jQuery.ScrollTo, check it's demo for an example of each option.
// @see http://flesler.demos.com/jquery/scrollTo/
// The defaults are public and can be overriden.
$localScroll.defaults = {
duration:1000, // How long to animate.
axis:'y', // Which of top and left should be modified.
event:'click', // On which event to react.
stop:true, // Avoid queuing animations
target: window // What to scroll (selector or element). The whole window by default.
/*
lock:false, // ignore events if already animating
lazy:false, // if true, links can be added later, and will still work.
filter:null, // filter some anchors out of the matched elements.
hash: false // if true, the hash of the selected link, will appear on the address bar.
*/
};
$.fn.localScroll = function( settings ){
settings = $.extend( {}, $localScroll.defaults, settings );
if (settings.hash && location.hash) {
if (settings.target) window.scrollTo(0, 0);
scroll(0, location, settings);
}
return settings.lazy ?
// use event delegation, more links can be added later.
this.bind( settings.event, function( e ){
// Could use closest(), but that would leave out jQuery -1.3.x
var a = $([e.target, e.target.parentNode]).filter(filter)[0];
// if a valid link was clicked
if( a )
scroll( e, a, settings ); // do scroll.
}) :
// bind concretely, to each matching link
this.find('a,area')
.filter( filter ).bind( settings.event, function(e){
scroll( e, this, settings );
}).end()
.end();
function filter(){// is this a link that points to an anchor and passes a possible filter ? href is checked to avoid a bug in FF.
return !!this.href && !!this.hash && this.href.replace(this.hash,'') == URI && (!settings.filter || $(this).is( settings.filter ));
};
};
// Not needed anymore, kept for backwards compatibility
$localScroll.hash = function() {}
function scroll( e, link, settings ){
var id = link.hash.slice(1),
elem = document.getElementById(id) || document.getElementsByName(id)[0];
if ( !elem )
return;
if( e )
e.preventDefault();
var $target = $( settings.target );
if( settings.lock && $target.is(':animated') ||
settings.onBefore && settings.onBefore(e, elem, $target) === false )
return;
if( settings.stop )
$target._scrollable().stop(true); // remove all its animations
if( settings.hash ) {
var offset = settings.offset;
offset = offset && offset.top || offset || 0;
var attr = elem.id == id ? 'id' : 'name',
$a = $('<a> </a>').attr(attr, id).css({
position:'absolute',
top: $(window).scrollTop() + offset,
left: $(window).scrollLeft()
});
elem[attr] = '';
$('body').prepend($a);
location = link.hash;
$a.remove();
elem[attr] = id;
}
$target
.scrollTo( elem, settings ) // do scroll
.trigger('notify.serialScroll',[elem]); // notify serialScroll about this change
};
})( jQuery );