text: // javaScript tutorial
  
  // Garbage Collection
  
  // creating object
  let user = {
  	name : "pooya",
  	age : 26	
  };
  
  // result will be [object Object], here will see the type of user
  document.write(user);
  
  document.write("<br>"+user.name);
  
  user = null;
  
  delete user.name;
  delete user.age;
  
  document.write(user);
  
  