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jquery.hashchange-1.0.0.js
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jquery.hashchange-1.0.0.js
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/**
* jQuery hashchange 1.0.0
*
* (based on jquery.history)
*
* Copyright (c) 2008 Chris Leishman (chrisleishman.com)
* Dual licensed under the MIT (MIT-LICENSE.txt)
* and GPL (GPL-LICENSE.txt) licenses.
*/
(function($) {
$.fn.extend({
hashchange: function(callback) { this.bind('hashchange', callback) },
openOnClick: function(href) {
if (href === undefined || href.length == 0)
href = '#';
return this.click(function(ev) {
if (href && href.charAt(0) == '#') {
// execute load in separate call stack
window.setTimeout(function() { $.locationHash(href) }, 0);
} else {
window.location(href);
}
ev.stopPropagation();
return false;
});
}
});
// IE 8 introduces the hashchange event natively - so nothing more to do
if ($.browser.msie && document.documentMode && document.documentMode >= 8) {
$.extend({
locationHash: function(hash) {
if (!hash) hash = '#';
else if (hash.charAt(0) != '#') hash = '#' + hash;
location.hash = hash;
}
});
return;
}
var curHash;
// hidden iframe for IE (earlier than 8)
var iframe;
$.extend({
locationHash: function(hash) {
if (curHash === undefined) return;
if (!hash) hash = '#';
else if (hash.charAt(0) != '#') hash = '#' + hash;
location.hash = hash;
if (curHash == hash) return;
curHash = hash;
if ($.browser.msie) updateIEFrame(hash);
$.event.trigger('hashchange');
}
});
$(document).ready(function() {
curHash = location.hash;
if ($.browser.msie) {
// stop the callback firing twice during init if no hash present
if (curHash == '') curHash = '#';
// add hidden iframe for IE
iframe = $('<iframe />').hide().get(0);
$('body').prepend(iframe);
updateIEFrame(location.hash);
setInterval(checkHashIE, 100);
} else {
setInterval(checkHash, 100);
}
});
$(window).unload(function() { iframe = null });
function checkHash() {
var hash = location.hash;
if (hash != curHash) {
curHash = hash;
$.event.trigger('hashchange');
}
}
if ($.browser.msie) {
// Attach a live handler for any anchor links
$('a[href^=#]').live('click', function() {
var hash = $(this).attr('href');
// Don't intercept the click if there is an existing anchor on the page
// that matches this hash
if ($(hash).length == 0 && $('a[name='+hash.slice(1)+']').length == 0) {
$.locationHash(hash);
return false;
}
});
}
function checkHashIE() {
// On IE, check for location.hash of iframe
var idoc = iframe.contentDocument || iframe.contentWindow.document;
var hash = idoc.location.hash;
if (hash == '') hash = '#';
if (hash != curHash) {
if (location.hash != hash) location.hash = hash;
curHash = hash;
$.event.trigger('hashchange');
}
}
function updateIEFrame(hash) {
if (hash == '#') hash = '';
var idoc = iframe.contentWindow.document;
idoc.open();
idoc.close();
if (idoc.location.hash != hash) idoc.location.hash = hash;
}
})(jQuery);