Obect creation vs instance creation !!

[ocrumbs]

Obect creation vs instance creation !!

[hshoff]

Correct, there are two different use cases. Use new Object() when you want to many instances with shared functionality. Use {} for one off objects.

With the style guide, we were just trying to say when you're making a plain object it's preferred you use object literal syntax. to avoid this:

var dragon = new Object();
dragon.firstName = 'fred';
dragon.lastName = 'the dragon';

// preferred
var dragon = {
  firstName: 'fred',
  lastName: 'the dragon'
};

If you need to use new Object() to share functionality between different instances, that's okay too.

Here's a great read on the different ways to create objects: Five ways to create objects…

[spikebrehm]

I can't think of any reason it would be a good idea to use new Object() vs {}. Now, new MyObject() is a different story.

[ocrumbs]

new object() works fundamentally very similar to how jquery plugins work. "Create it once and then reimplement over and over again by instantiating". The other option can be a bit clumsy to achieve that use case. At the OS level a new memory block is created for every instance, that will avoid unnecessary use of CPU cycles.