What do curly braces in JavaScript mean?

Question

I found this in a jQuery file:

xxx.css({ 'float' : 'right' }); 

What do the curly braces do?

Answer 1

In your case it is an object passed to your css function.

myObj={} // a blank object 

Here you can use this too

myObj={'float' : 'right'} xxx.css(myObj); 

Here is another example of object

var myObj={     'varOne':'One',     'methodOne':function(){ alert('methodOne has been called!')}         } myObj.methodOne();​ // It will alert 'methodOne has been called!' 

A fiddle is here.

Answer 2

The curly braces in the code you've shown define an object literal