How to validate a text using regular expression in java script?

Question

I have a regular expression to validate the dates and it works fine, this is it

^(0[1-9]|[1-9]|1[012])[- /.](0[1-9]|[1-9]|[12][0-9]|3[01])[- /.](19|20)\d\d$

But I want to validate it using the javascript. I tried with this

var  ck_effectivedate= /^(0[1-9]|[1-9]|1[012])[- /.](0[1-9]|[1-9]|[12][0-9]|3[01])[- /.](19|20)\d\d$/;

function radtxtbxNewEffectiveDateOnBlur(sender, eventArgs) {

  if (!ck_effectivedate.test(sender.get_value())) {
    alert('matches');
   }
   else
   {
     alert('does not match');
   }

}

But, the regular expression is not working, because of the presence of / character in my regular expression which is also used to encapsulate the regular expression in java script.

If I remove the / character then it works, but I want to use that in my string. Please help.

David Thomas · Accepted Answer · 2012-07-05 11:38:02Z

3

You simply need to escape the special characters with a backslash \:

^(0[1-9]|[1-9]|1[012])[- \/.](0[1-9]|[1-9]|[12][0-9]|3[01])[- \/.](19|20)\d\d$

References:

JavaScript Regular Expressions.

answered Jul 5, 2012 at 11:38

David Thomas

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