Comments on: Logical AND (&&) and Logical OR (||) in Javascript http://blog.stchur.com/2007/02/14/logical-and-and-logical-or-in-javascript/ web / programming / javascript / css / html Tue, 29 Jun 2010 15:30:09 +0000 http://wordpress.org/?v=2.9.2 hourly 1 By: sstchur http://blog.stchur.com/2007/02/14/logical-and-and-logical-or-in-javascript/comment-page-1/#comment-469 sstchur Thu, 31 Jan 2008 00:08:54 +0000 http://stchur.com/blog2/2007/02/14/logical-and-and-logical-or-in-javascript/#comment-469 Scott: <p>Valid point. I've actually done that on one or two occasions, violating my own recommendations.</p> <p>In that one limited case, I think using logical AND as a shortcut is probably okay.</p> <p>Thanks for the suggestion.</p> Scott:

Valid point. I've actually done that on one or two occasions, violating my own recommendations.

In that one limited case, I think using logical AND as a shortcut is probably okay.

Thanks for the suggestion.

]]> By: Scott Bockelman http://blog.stchur.com/2007/02/14/logical-and-and-logical-or-in-javascript/comment-page-1/#comment-461 Scott Bockelman Wed, 30 Jan 2008 19:47:40 +0000 http://stchur.com/blog2/2007/02/14/logical-and-and-logical-or-in-javascript/#comment-461 You can use the && construct to avoid a chain of null checks to get the last node or last value in a chain of references. Consider this code: // get the value of x.y.z var value = x && x.y && x.y.z; instead of: var value = ( null == x ? null : ( null == x.y ? null : x.y.z ) ); You can use the && construct to avoid a chain of null checks to get the last node or last value in a chain of references.

Consider this code:

// get the value of x.y.z
var value = x && x.y && x.y.z;

instead of:

var value = ( null == x ? null : ( null == x.y ? null : x.y.z ) );

]]> By: Idetrorce http://blog.stchur.com/2007/02/14/logical-and-and-logical-or-in-javascript/comment-page-1/#comment-46 Idetrorce Sat, 15 Dec 2007 12:44:06 +0000 http://stchur.com/blog2/2007/02/14/logical-and-and-logical-or-in-javascript/#comment-46 very interesting, but I don't agree with you Idetrorce very interesting, but I don't agree with you
Idetrorce

]]> By: sstchur http://blog.stchur.com/2007/02/14/logical-and-and-logical-or-in-javascript/comment-page-1/#comment-45 sstchur Wed, 14 Feb 2007 16:00:28 +0000 http://stchur.com/blog2/2007/02/14/logical-and-and-logical-or-in-javascript/#comment-45 Thanks Rich! I wasn't aware of that; it's good to know. Thanks Rich! I wasn't aware of that; it's good to know.

]]> By: RichB http://blog.stchur.com/2007/02/14/logical-and-and-logical-or-in-javascript/comment-page-1/#comment-44 RichB Wed, 14 Feb 2007 09:30:19 +0000 http://stchur.com/blog2/2007/02/14/logical-and-and-logical-or-in-javascript/#comment-44 See the ?? operator in C# for a similar language feature. See the ?? operator in C# for a similar language feature.

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