Update: There is now the HTML5 History API (pushState, popState) which deprecates the HTML4 hashchange
functionality. History.js provides cross-browser compatibility and an optional hashchange
fallback for HTML4 browsers.
To store the history of a page, the most popular and full featured/supported way is using hashchanges. This means that say you go from yoursite/page.html#page1
to yoursite/page.html#page2
you can track that change, and because we are using hashes it can be picked up by bookmarks and back and forward buttons.
You can find a great way to bind to hash changes using the jQuery History project
http://www.balupton.com/projects/jquery-history
There is also a full featured AJAX extension for it, allowing you to easily integrate Ajax requests to your states/hashes to transform your website into a full featured Web 2.0 Application:
http://www.balupton.com/projects/jquery-ajaxy
They both provide great documentation on their demo pages to explain what is happening and what is going on.
Here is an example of using jQuery History (as taken from the demo site):
// Bind a handler for ALL hash/state changes
$.History.bind(function(state){
// Update the current element to indicate which state we are now on
$current.text('Our current state is: ['+state+']');
// Update the page"s title with our current state on the end
document.title = document_title + ' | ' + state;
});
// Bind a handler for state: apricots
$.History.bind('/apricots',function(state){
// Update Menu
updateMenu(state);
// Show apricots tab, hide the other tabs
$tabs.hide();
$apricots.stop(true,true).fadeIn(200);
});
And an example of jQuery Ajaxy (as taken from the demo site):
'page': {
selector: '.ajaxy-page',
matches: /^\/pages\/?/,
request: function(){
// Log what is happening
window.console.debug('$.Ajaxy.configure.Controllers.page.request', [this,arguments]);
// Adjust Menu
$menu.children('.active').removeClass('active');
// Hide Content
$content.stop(true,true).fadeOut(400);
// Return true
return true;
},
response: function(){
// Prepare
var Ajaxy = $.Ajaxy; var data = this.State.Response.data; var state = this.state;
// Log what is happening
window.console.debug('$.Ajaxy.configure.Controllers.page.response', [this,arguments], data, state);
// Adjust Menu
$menu.children(':has(a[href*="'+state+'"])').addClass('active').siblings('.active').removeClass('active');
// Show Content
var Action = this;
$content.html(data.content).fadeIn(400,function(){
Action.documentReady($content);
});
// Return true
return true;
And if you ever want to get the querystring params (so yoursite/page.html#page1?a.b=1&a.c=2
) you can just use:
$.History.bind(function(state){
var params = state.queryStringToJSON(); // would give you back {a:{b:1,c:2}}
}
So check out those demo links to see them in action, and for all installation and usage details.