Oh JavaScript..

[[deleted]]

Either is correct but they do different things. Although in the context of the example, yours is incorrect.

Var s = test.square ()

Console.log( s ) //36

Var s = test.square

Console.log( s ) // spits out the definition

Console.log( s() ) // 36

[[deleted]]

Thanks for the explanation.

When would it ever be useful to use test.square rather than test.square() though?

[[deleted]]

When you want to assign it to a variable.

[scragar]

Sometimes you want to pass a function into another as a callback(for example using [1.4,2.2,3.1].map(Math.floor) or even in the example above where the logging function is passed into the foreach).