Javascript / Client Side Development :: regular expresion remember matches


	regular expresion remember matches I always have trouble with javascript regexes... I want to parse apart a string and remember the matches and use them elswhere. Say I have: var test_string='one_two-three'; In perl I would do this; if($test_string=~/(.)_(.)-(.)/){ print $2; } I'm not sure how to do this in javascript. Does $1 only work in the replace function???? Jeff - Hide quoted text - Jeff wrote: > I always have trouble with javascript regexes... > I want to parse apart a string and remember the matches and use them > elswhere. > Say I have: > var test_string='one_two-three'; > In perl I would do this; > if($test_string=~/(.)_(.)-(.)/){ > print $2; > } > I'm not sure how to do this in javascript. Does $1 only work in the > replace function???? Um... I suck at Regular Expressions (always have). But maybe: http://www.hunlock.com/blogs/An_Introduction_to_Regular_Expressions_i... http://www.regular-expressions.info/javascript.html http://devedge-temp.mozilla.org/library/manuals/2000/javascript/1.5/g... http://www.evolt.org/node/36435 ...can be of some assistance. Otherwise, just wait, someone will be alone momentarily with your regexp. Ah what the hell... I'll throw up a regular expression (which is sure to be corrected/flawed): var test_string = 'one_two-three'; var _regexp = /(\w+)_(\w+)-(\w+)/; alert(test_string.replace(_regexp, '$2')) That is basically the exact same thing you have. I am sure regexp gurus can offer a better solution though, both in your example and mine. -- -Lost Remove the extra words to reply by e-mail. Don't e-mail me. I am kidding. No I am not. On May 12, 9:29 pm, Jeff <dont_bug@all.uk> wrote: > I want to parse apart a string and remember the matches and use them > elswhere. Use match method: http://www.devarticles.com/c/a/JavaScript/Regular-expressions-in-Java... http://msdn2.microsoft.com/en-us/library/7df7sf4x.aspx > var test_string='one_two-three'; > if($test_string=~/(.)_(.)-(.)/){ > print $2; > } > I'm not sure how to do this in javascript. var test_string='one_two-three',x; if(x=test_string.match(/(.)_(.)-(.)/)){ alert(x[2]) } - Hide quoted text - scripts.contact wrote: > On May 12, 9:29 pm, Jeff <dont_bug@all.uk> wrote: >>I want to parse apart a string and remember the matches and use them >>elswhere. > Use match method: > http://www.devarticles.com/c/a/JavaScript/Regular-expressions-in-Java... > http://msdn2.microsoft.com/en-us/library/7df7sf4x.aspx >>var test_string='one_two-three'; >>if($test_string=~/(.)_(.)-(.)/){ >>print $2; >>} >>I'm not sure how to do this in javascript. > var test_string='one_two-three',x; What's with the ,x? Is that like doing this: var test_string='one_two-three'; var x; > if(x=test_string.match(/(.)_(.)-(.)/)){ > alert(x[2]) Ahhh! Thanks! OT. Is Martin Honnen still around? Jeff - Hide quoted text - > } On May 12, 9:50 pm, -Lost <maventheextrawo@techie.com> wrote: > http://www.hunlock.com/blogs/An_Introduction_to_Regular_Expressions_i... > http://www.regular-expressions.info/javascript.html > http://devedge-temp.mozilla.org/library/manuals/2000/javascript/1.5/g... > http://www.evolt.org/node/36435 And: http://msdn.microsoft.com/library/default.asp?url=/library/en-us/scri... Jeff wrote: > OT. Is Martin Honnen still around? I don't know about right this moment, but yeah, he's around. -- -Lost Remove the extra words to reply by e-mail. Don't e-mail me. I am kidding. No I am not. Jeff said the following on 5/13/2007 12:07 AM: > scripts.contact wrote: <snip> >> var test_string='one_two-three',x; > What's with the ,x? Is that like doing this: > var test_string='one_two-three'; > var x; Yes, it is the same thing. >> if(x=test_string.match(/(.)_(.)-(.*)/)){ >> alert(x[2]) > Ahhh! Thanks! > OT. Is Martin Honnen still around? Yes, you just don't see him as much anymore as you used to. -- Randy Chance Favors The Prepared Mind comp.lang.javascript FAQ - http://jibbering.com/faq/index.html Javascript Best Practices - http://www.JavascriptToolbox.com/bestpractices/