Regular Expressions

[dakkardaemor]

Hi all!

I've a little question ;-)

I must create a regexp that matches only:
true|false|0|1

so I tryed with this one:
0|1|true|false

it seems to work well, but it matches also with:
truex falsehood and so on..

so I tried this one:
^(0|1|true|false)$
but this one doesn't seems to work as I supposed, it doesn't match with
true
for example :_(

I tried also:
^0|1|true|false$
but this one doesn't work as my first attempt...

In conclusion:
I think that
^(0|1|true|false)$
must be the solution, but I don't know why it doesn't work.

Please help!

Thank you in advance!

Dakkar

 

[tsuji]

For single line test, try this pattern?
[tt] /^.*\b(0|1|true|false)\b.*$/gi[/tt]
- tsuji

 

[tsdragon]

Try putting parens around your alternatives:

[tt]^(0|1|true|false)$[/tt]



Tracy Dryden

Meddle not in the affairs of dragons,
For you are crunchy, and good with mustard.

 

[dakkardaemor]

thanks tsugi, but seems to not work with my javascript function to test them

function demoMatchClick() {
var re = new RegExp(document.demoMatch.regex.value);
if (document.demoMatch.subject.value.match(re)) {
alert("Successful match");
} else {
alert("No match");
}
}

:_(


Thanks also to you tsdragon, but your expression that seems correct me too, doesn't work! :_(

Thank you anyway friends, if you have some other ideas, please post them!

 

[damber]

dakkardaemor,

The code tsuji posted was intended to be executed as such:

  var myRE = /^.*\b(0|1|true|false)\b.*$/gi;

  // then use as normal..
  alert(myRE.test(document.demoMatch.subject.value));

the / at each end is the start and end delimiter, the gi are switches - try the above or try the following in your own setup (where you take it from a text box on the page).

   ^.*\b(0|1|true|false)\b.*$

Type the above into the text box, this should then work as expected.

Good luck...

A smile is worth a thousand kind words. So smile, it's easy!

 

[dakkardaemor]

ahhhh! ^_^
GREAT! ^_^

Thank you friends!!!

I'm really really happy!
Thank you!

I hope to help you if you need as you helped me!

Thanks!

Dakkar Daemor
Ytanium reviewer
Freeware Fan