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Message-ID: <2177465.0Ca87JebjB@PointedEars.de>
From: Thomas 'PointedEars' Lahn <PointedEars@web.de>
Reply-To: Thomas 'PointedEars' Lahn <cljs@PointedEars.de>
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Date: Sun, 06 Jan 2013 01:21:58 +0100
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Subject: Re: typeof and jslint
Newsgroups: comp.lang.javascript
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Andrew Poulos wrote:

> If I test the following with jslint
>    if (typeof num === 'undefined') { return false; }
> 
> I get the error
>    Unexpected 'typeof'. Use '===' to compare directly with undefined.
> 
> I'm not sure what its telling me. Is it saying that I should instead use
>    if (num === undefined) { return false; }
> ?

Probably, yes.
 
> Why is tyepof unexpected?

Because Douglas Crockford has some rather weird and purely subjective 
notions how these languages – that he misleads others to think of as a 
single one – should be written, and those notions are expressed and
enforced by jslint.


PointedEars
-- 
var bugRiddenCrashPronePieceOfJunk = (
    navigator.userAgent.indexOf('MSIE 5') != -1
    && navigator.userAgent.indexOf('Mac') != -1
)  // Plone, register_function.js:16