Comments on: One Line Random Boolean in JavaScript http://ralphholzmann.com/2009/12/28/one-line-random-boolean-in-javascript/ Web Development - jQuery, PHP, MySQL. In that order. Tue, 23 Feb 2010 18:28:06 +0000 hourly 1 http://wordpress.org/?v=3.0 By: Ralph http://ralphholzmann.com/2009/12/28/one-line-random-boolean-in-javascript/comment-page-1/#comment-5 Ralph Mon, 28 Dec 2009 21:07:20 +0000 http://ralphholzmann.com/?p=38#comment-5 Josh Dean, you're right! My initial intuition was that the double negation (!!) takes any pseudo boolean (like the number zero or an empty string) and converts it into a true JavaScript boolean. However, in this case, since the value is inherently random to begin with, only one negation is needed to convert it to a true boolean. Thanks for the comment! I'll update the post shortly. Josh Dean, you’re right!

My initial intuition was that the double negation (!!) takes any pseudo boolean (like the number zero or an empty string) and converts it into a true JavaScript boolean.

However, in this case, since the value is inherently random to begin with, only one negation is needed to convert it to a true boolean. Thanks for the comment! I’ll update the post shortly.

]]> By: Josh Dean http://ralphholzmann.com/2009/12/28/one-line-random-boolean-in-javascript/comment-page-1/#comment-4 Josh Dean Mon, 28 Dec 2009 20:34:40 +0000 http://ralphholzmann.com/?p=38#comment-4 Is the second negation really that necessary? If you check the typeof of the just a single negation, it still returns "boolean." Is this a cross browser specific fix? Is the second negation really that necessary? If you check the typeof of the just a single negation, it still returns “boolean.”

Is this a cross browser specific fix?

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