jquery.mobile.page.cache.js

(function ( jQuery ) {
	$( 'body' ).delegate( ".ui-page", "pagebeforeshow", function( event, opts ) {
		var $page = $(event.target),
				reloadPage = false,
				cacheStrategy = $page.data('cache'),
				pageInstance = $page.data('page'),
				invalidateCache = pageInstance.dirtyCache;
		
		// Check if page never gets cached
		if ( cacheStrategy == 'never' ) {
			reloadPage = true;

		// Check if data-cache has a number.
		} else if ( !isNaN( cacheStrategy ) ) {
			var currentTime = +new Date;
			
			if ( invalidateCache && currentTime > invalidateCache )
				reloadPage = true;
			else if( !invalidateCache )
				pageInstance.dirtyCache = (cacheStrategy * 1000) + currentTime;
		}

		if ( reloadPage ) {
			var url = $page.attr( 'id' ) || '/';
			$page.page( 'destroy' );
			$.ajax({
				url: url,
				async: false,
				cache: false,
				context: $page,
				success: function(data) {
					this.html($(data).html()).page();
				}
			});
		}
		
		return true;
	});
	
})( jQuery );