// four variables are created and assigned in a single go, // separated by commas var myObj = new Object(), str = 'myString', rand = Math.random(), obj = new Object();myObj.type = 'Dot syntax';myObj['date created'] = 'String with space';myObj[str] = 'String value';myObj[rand] = 'Random Number';myObj[obj] = 'Object';myObj[''] = 'Even an empty string';console.log(myObj);