User:Avanidhar/QueryString.js

/** function QueryString(qString) { this.string = qString; this.params = {}; if( qString.length == 0 ) { return; }	qString.replace(/\+/, ' '); var args = qString.split('&'); for( var i = 0; i < args.length; ++i ) { var pair = args[i].split( '=' ); var key = decodeURIComponent( pair[0] ), value = key; if( pair.length == 2 ) { value = decodeURIComponent( pair[1] ); }		this.params[key] = value; } }
 * Maps the querystring to an object
 * Functions:
 * QueryString.exists(key)
 * returns true if the particular key is set
 * QueryString.get(key)
 * returns the value associated to the key
 * QueryString.equals(key, value)
 * returns true if the value associated with given key equals given value
 * QueryString.toString
 * returns the query string as a string
 * QueryString.create( hash )
 * creates an querystring and encodes strings via encodeURIComponent and joins arrays with |
 * In static context, the value of location.search.substring(1), else the value given to the constructor is going to be used. The mapped hash is saved in the object.
 * Example:
 * var value = QueryString.get('key');
 * var obj = new QueryString('foo=bar&baz=quux');
 * value = obj.get('foo');
 * Example:
 * var value = QueryString.get('key');
 * var obj = new QueryString('foo=bar&baz=quux');
 * value = obj.get('foo');
 * value = obj.get('foo');

QueryString.static = null;

QueryString.staticInit = function { if( QueryString.static == null ) { QueryString.static = new QueryString(location.search.substring(1)); } } QueryString.get = function(key) { QueryString.staticInit; return QueryString.static.get(key); }; QueryString.prototype.get = function(key) { return this.params[key] ? this.params[key] : null; }; QueryString.exists = function(key) { QueryString.staticInit; return QueryString.static.exists(key); } QueryString.prototype.exists = function(key) { return this.params[key] ? true : false; } QueryString.equals = function(key, value) { QueryString.staticInit; return QueryString.static.equals(key, value); } QueryString.prototype.equals = function(key, value) { return this.params[key] == value ? true : false; } QueryString.toString = function { QueryString.staticInit; return QueryString.static.toString; } QueryString.prototype.toString = function { return this.string ? this.string : null; } QueryString.create = function( arr ) { var resarr = Array; var editToken; // KLUGE: this should always be the last item in the query string (bug TW-B-0013) for( var i in arr ) { if( typeof arr[i] == 'undefined' ) { continue; }		var res; if( arr[i] instanceof Array ){ var v = Array; for(var j = 0; j < arr[i].length; ++j ) { v[j] = encodeURIComponent( arr[i][j] ); }			res = v.join('|'); } else { res = encodeURIComponent( arr[i] ); }		if( i == 'wpEditToken' ) { editToken = res; } else { resarr.push( encodeURIComponent( i ) + '=' + res ); }	}	if( typeof editToken != 'undefined' ) { resarr.push( 'wpEditToken=' + editToken ); }	return resarr.join('&'); } QueryString.prototype.create = QueryString.create;