lib/webpage.js
function (propertyName, callbackFn) {
                    var self = this;

                    request.post(this.options.hostAndPort + '/page/properties/get', {form:{ propertyName:propertyName}},
                        function (error, response, body) {
                            error && console.error(error);
                            if (response && response.statusCode === 200) {
                                callbackFn && callbackFn.call(self, body);
                            }
                            else {
                                console.log('error in response %s'.red.bold, body);
                                callbackFn && callbackFn.call(self, false, body);
                            }
                        });
                }
function (propertyName, callbackFn) {
                    var self = this;

                    request.post(this.options.hostAndPort + '/page/properties/get', {form:{ propertyName:propertyName}},
                        function (error, response, body) {
                            error && console.error(error);
                            if (response && response.statusCode === 200) {
                                callbackFn && callbackFn.call(self, body);
                            }
                            else {
                                console.log('error in response %s'.red.bold, body);
                                callbackFn && callbackFn.call(self, false, body);
                            }
                        });
                }
function ( propertyName , callbackFn ) { var self = this ; request . post ( this . options . hostAndPort + '/page/properties/get' , { form : { propertyName : propertyName } } , function ( error , response , body ) { error && console . error ( error ) ; if ( response && response . statusCode === 200 ) { callbackFn && callbackFn . call ( self , body ) ; } else { console . log ( 'error in response %s' . red . bold , body ) ; callbackFn && callbackFn . call ( self , false , body ) ; } } ) ; }
gets property value ex. version
gets property value ex . version