navigation url hash

browsing.js

/**
 * Author: Weslley Alves <weslley.tec@gmail.com>
 * Author URI: http://wezo.com.br
 * Version: 0.0.1
 * License: GNU General Public License
 * License URI: http://www.wezo.com.br/blog/license/gnu-general-public-license/
 *
 * Examples:
 * <script type="text/javascript">
 *
 *	var bwg = browsing ;
 *	var params = new Object();
 *	
 *	params.callback = function(){
 *		console.log(["call function" , bwg.getParams() ]);
 *	};
 *	
 *	bwg.init(params);
 *
 */
var browsing = {
		separator : 		new String("&"),
		separator_value : 	new String("="),
		identifier_hash : 	new String("#"),
		params : 		new Object(),
		callback : 		null,
 
		init : function(params) {
			if(params !== undefined) {
 
				if(params.separator !== undefined) {
					this.separator = params.separator;
				};
				
				if(params.separator_value !== undefined) {
					this.separator_value = params.separator_value;
				};
 
				if(params.callback !== undefined) {
					this.callback = params.callback;
					this.observer();
				};
 
				if(params.identifier_hash !== undefined) {
					this.identifier_hash = params.identifier_hash;
				};
			};
		},
		
		hash : function() { 
			return window.location.hash ;
		},
		
		href : function() { 
			return window.location.href ;
		},
 
		hasHash : function() {
 
			if(this.hash() === "" || this.href().lastIndexOf(this.identifier_hash) <= 0) {
				return false;
			}else{
				return true;
			}
		},
		
		typeHash : function() {
			return this.hasHash() === true ? typeof(this._hash) : null;
		},
		
		cleanHash : function(str) {
			return str.replace(this.identifier_hash,"");
		},
		
		stringHash : function() {
 
			if(this.identifier_hash === "#"){
				return this.cleanHash(this.hash());
			}else{
				return this.cleanHash(this.grabString());
			}
		},
		
		grabString : function() {
			var size_string = this.href().length;
			var position_identifier_hash = this.href().lastIndexOf(this.identifier_hash);
			if(size_string > 0) {
				return this.href().substr(position_identifier_hash,size_string);
			};
			return null;
		},
		
		getParams : function() {
			this.params = new Array();
 
			if(this.hasHash() === true) {
				var array_params = this.stringHash().split(this.separator); 
				var array_k_v = [];
				for ( var i = 0; i < array_params.length; i++) {
					array_k_v = array_params[i].split(this.separator_value);
					this.params[array_k_v[0]] = array_k_v[1];
				};
			};
 
			return this.params;
		},
		
		observer : function() {
			var callback = this.callback;
			if (("onhashchange" in window) && !($.browser.msie)) {
			    window.onhashchange = function () {
			    	return callback();
			    };
			}else{
			   var prevHash = this.hash();
			   window.setInterval(function () {
			      if (this.hash() !== prevHash) {
			        storedHash = this.hash();
			        return callback();
			      }
			   }, 100);
			}
 
		}
		
};