using attributes vs this variables in class JS code example

Example 1: class declaration in javascript

class NameOfClass {
//class declaration first letter should be capital it's a convention
  obj="text";
  obj2="some other text";
}
//always call class with "new" key word
console.log(new NameOfClass);

Example 2: how to create class in javascript

class ClassName
{
	  
}