javascript - String.Match() not working as expected

Question

Using the following string:

And this regex:

(http://)(www.){0,1}(google.com.ar)[\S]*

This code:

var result = links.match(new RegExp("(http://)(www.){0,1}(google.com.ar)[\S]*"));
for(var i = 0;i<result.length;i++)
{
    alert(result[i]);
}

Gives me this output:

http://www.google.com.ar
http://
www.
google.com.ar

I have already tried to test the regex in http://regexpal.com/ and www.regextester.com, and in both cases the highlighted matches are correct, so i guess the problem is with the code. I'm really new with javascript so i can't see the problem.

Thanks in advance

"... not working as expected" What exactly did you expect? — Ignacio Vazquez-Abrams
– Ignacio Vazquez-Abrams, Commented Jan 23, 2012 at 2:07
I expected the correct matches, for example the regex should match at least: google.com.ar/intl/es-419/about.html But it does not do that. — BizTuk
– BizTuk, Commented Jan 23, 2012 at 2:14

Niet the Dark Absol · Accepted Answer · 2012-01-23 02:07:12Z

1

Use the g flag on your regex.

var result = links.match(/http:\/\/(?:www\.)?google\.com\.ar([\S]*)/g);

answered Jan 23, 2012 at 2:07

Niet the Dark Absol

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4 Comments

BizTuk Over a year ago

Thanks, this worked perfectly. But i need the webpage to be a variable, is there any way to archive this with the regex "format" i posted?

Niet the Dark Absol Over a year ago

Well, if you loop through the result array, you can then test the regex again but without the g flag. This will allow you to get the subpatterns.

BizTuk Over a year ago

This is what i mean : new RegExp("(http://)(www.){0,1}("+ URL +")[\S]*"). I need a simpler way to get the links from any website (not including sub domains: groups.google.com.ar).

BizTuk Over a year ago

Thanks, i splited your pattern in two: http:\\/\\/(?:www\\.)? ([\\S]*) And then checked: links.match(new RegExp(pattern1+URL+pattern2,'gi'));

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