Javascript logic syntax

Question

My task was to create an object/class called MrFreeze and mark this object as frozen so that no other changes can be made to it.] I came up with the following solution which worked:

Object.freeze(MrFreeze);

But then as I viewed the solutions provided on http://www.codewars.com I came across this code:

(Object.freeze || object)(MrFreeze);

I fail to understand this line of code. Please explain why this works when using a OR object operator.

this is my working code and i understand it Object.freeze(MrFreeze),BUT I need explanation on this line of code: (Object.freeze || object) (MrFreeze) — Klein_Jnr
– Klein_Jnr, Commented Jan 17, 2014 at 13:14
You need to add some supporting code to help people understand the context and therefore be able to help you. — Raad
– Raad, Commented Jan 17, 2014 at 13:16

R. Oosterholt · Accepted Answer · 2014-01-17 13:15:51Z

1

Seems like a fallback to me.

when Object.freeze does exist it performs:

Object.freeze(MrFreeze);

when Object.freeze doesn't exist it performs:

object(MrFreeze);

This might as well be written as (more verbose for clearification):

function freeze(MrFreeze, object) {
    if (Object.freeze) {
        Object.freeze(MrFreeze);
    }
    else {
        object(MrFreeze);
    }
}

answered Jan 17, 2014 at 13:15

R. Oosterholt

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