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Webmaster Forum / HTML, CSS, Scripts / JavaScript / August 2005RegExp
Hi, I need to create a dynamically pattern match for validate a number input, first without decimals and then with 2 or more decimals. Thanks in advance, Enzo Enzo wrote on 30 aug 2005 in comp.lang.javascript: > I need to create a dynamically pattern match > for validate a number input, first without > decimals and then with 2 or more decimals. What do you mean by "dynamically"? What did you try yourself?  SignatureEvertjan. The Netherlands. (Replace all crosses with dots in my emailaddress) Hi Evertjan, I tried this pattern: /^-?\d+(\.\d{1,3})?$/ for 1 to 3 decimals, but I need to replace the static values '1' & '3' with variables. Thanks again, Enzo Enzo wrote on 30 aug 2005 in comp.lang.javascript: > Hi Evertjan, > [quoted text clipped - 4 lines] > for 1 to 3 decimals, but I need to replace > the static values '1' & '3' with variables. myTestValue = 1.1234 a = 1 b = 3 myRegex = "^-?\\d+\\.\\d{"+a+","+b+"}?$" re = new RegExp(myRegex,""); alert( re.test(myTestValue) ) SignatureEvertjan. The Netherlands. (Replace all crosses with dots in my emailaddress) Works great! Thanks Evertjan! Enzo JRS: In article <1YXQe.3343174$I96.3853437@telenews.teleline.es>, dated Tue, 30 Aug 2005 12:05:17, seen in news:comp.lang.javascript, Enzo <yuyu@yuyu.com> posted : >I tried this pattern: > >/^-?\d+(\.\d{1,3})?$/ > >for 1 to 3 decimals, but I need to replace >the static values '1' & '3' with variables. Unless this is school work, you do not *need* to replace the values, since you can also use (\.\d+) and test the length of the match. <URL:http://www.merlyn.demon.co.uk/js-valid.htm> Signature© John Stockton, Surrey, UK. ?@merlyn.demon.co.uk Turnpike v4.00 IE 4 © <URL:http://www.jibbering.com/faq/> JL/RC: FAQ of news:comp.lang.javascript <URL:http://www.merlyn.demon.co.uk/js-index.htm> jscr maths, dates, sources. <URL:http://www.merlyn.demon.co.uk/> TP/BP/Delphi/jscr/&c, FAQ items, links. *** Enzo wrote/escribió (Tue, 30 Aug 2005 11:17:10 GMT): > I need to create a dynamically pattern match > for validate a number input, first without > decimals and then with 2 or more decimals. You can take this a start point: var my_filter=new Array('foo', 'bar'); eval('var re_filter=/^(' + my_filter.join('|') + ')$/i;'); Signature-- Álvaro G. Vicario - Burgos, Spain -- http://bits.demogracia.com - Mi sitio sobre programación web -- Don't e-mail me your questions, post them to the group -- Alvaro G Vicario wrote on 30 aug 2005 in comp.lang.javascript: > *** Enzo wrote/escribió (Tue, 30 Aug 2005 11:17:10 GMT): >> I need to create a dynamically pattern match [quoted text clipped - 5 lines] > var my_filter=new Array('foo', 'bar'); > eval('var re_filter=/^(' + my_filter.join('|') + ')$/i;'); Never use eval(), it is evil and not necessary. SignatureEvertjan. The Netherlands. (Replace all crosses with dots in my emailaddress) Gracias Alvaro, pero como dice Evertjan, eval is 'evil' ;-) Saludos, Enzo Enzo wrote on 30 aug 2005 in comp.lang.javascript: > pero como dice Evertjan, eval is 'evil' ;-) Because it is true and has been explained so many times in this NG. Please see the archive. SignatureEvertjan. The Netherlands. (Replace all crosses with dots in my emailaddress) |
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