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Re: Regex match

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 wrote on 05 aug 2013 in comp.lang.javascript:

> Succinctly, my question is, why does this provide a match:
> 
>  'D123'.match(/\d+/);  // -> result is ["123"]
> 
> whereas this does not provide a match:
> 
>  'D123'.match(/\d*/)   // -> [""]

Oh, but it DOES provide a match!!!!

The first match of \d* 
is the empty string section in front of the 'D'.

This will explain it to you:

alert( 'D123'.replace(/\d+/,'x') ); // Dx

and

alert( 'D123'.replace(/\d*/,'x') ); // xD123




-- 
Evertjan.
The Netherlands.
(Please change the x'es to dots in my emailaddress)

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Regex match andrew.perrins@gmail.com - 2013-08-05 14:16 -0700
  Re: Regex match "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2013-08-05 23:45 +0200
  Re: Regex match Ben Bacarisse <ben.usenet@bsb.me.uk> - 2013-08-05 22:45 +0100

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