Javascripts help with interpretation

Newsgroups	comp.lang.javascript
Date	2014-06-30 14:23 -0700
Message-ID	<321d3d42-d0a2-4eab-9aa1-559aac68d20c@googlegroups.com> (permalink)
Subject	Javascripts help with interpretation
From	jonas.thornvall@gmail.com

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Sometimes when i read code i realise my programming skils far to ancient.
 
return ((N<0) ? "-"+HexN : HexN);


This function return is a string but what does ((N<0) ? actually mean there is no if. And what about "-"+HexN : HexN); 

The first could be string building but what is : (colon) supposed to mean is it append?

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Javascripts help with interpretation jonas.thornvall@gmail.com - 2014-06-30 14:23 -0700
  Re: Javascripts help with interpretation Andrew Poulos <ap_prog@hotmail.com> - 2014-07-01 07:36 +1000
    Re: Javascripts help with interpretation jonas.thornvall@gmail.com - 2014-06-30 14:51 -0700
  Re: Javascripts help with interpretation Tim Slattery <tim@risingdove.com> - 2014-06-30 18:04 -0400

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