regex expression problem

[akaballa123]

Hi,

I am a newbie to reg expressions but trying to create one to control what is typed in a form field. If certain characters are found, an alert box pops up a msg when the user clicks submit. I tried my code, but it is not working..im sure there is something wrong with the regex...plz check it out:

function nameRegex(str)
   {
      return /([a-zA-Z0-9])+!?><([a-zA-Z0-9_-])+/.test(str);
   }
   function checkName(str)
   {
      if(nameRegex(str) == false)
      {
         return false;
      }
   }


 //Check the form for invalid or blank contents
  function checkForm()
  {
 var myForm = window.document.trainingForm;
   var ctName = myForm.tName;
if((ctName.value == '') || (checkName(ctName.value) == false))
     {
       alert('Please enter an appropriate course name');
       ctName.focus();
       return false;
     } 
}

thanks!

 

[BillyRayPreachersSon]

How did you go with thread216-1497913 ? Did you resolve it in the end?

Dan



Coedit Limited - Delivering standards compliant, accessible web solutions

[tt]Dan's Page [blue]@[/blue] Code Couch

http://www.codecouch.com/dan/

[/tt]

 

[akaballa123]

Oh im sorry..i thought I responded to that problem...well I found out that there is a date parse function that you can use. So I parsed the dates and then compared them in one line..

if(Date.parse(cStartD.value) > Date.parse(cEndD.value))
    {
       alert('ERROR: Start Date is greater than the end date. Please re-check your dates!');
       return false;
       cStartD.focus();
    }

Thanks for the help!

 

[Bong]

I'm certainly no expert in regular expressions (especially not in JS) but it looks like /([a-zA-Z0-9])+!?><([a-zA-Z0-9_-])+/ is looking for the following:
Any letter or number, 1 or more times,
followed by "!", one time or not at all,
followed by "><",
followed by a letter or number or "_" or "-", 1 or more times.

Is that what you intended?

_________________
Bob Rashkin

 

[akaballa123]

oh wow...im way off...i was intending for some thing where..within the string any character that is [highlight] ?!><[/highlight]. haha, i need to study this regex expressions. I was referring to some expression on one of the websites.

 

[Bong]

Like I said, I'm no expert. I could have gotten it wrong. On the off chance that I'm right, since "?" has a special meaning (one or no times), you would need to "escape" it: \?.

_________________
Bob Rashkin

 

[akaballa123]

im still not getting it to work. ANy ideas on how to implement this expression?

 

[tsuji]

[tt]/[?!><]/[/tt]

 

[akaballa123]

the expression doesnt seem to be working, unless i did not implement it correectly:

this is what I did:

function nameRegex(str)
{
return /[\?!><]/.test(str);
}
function checkName(str)
{
if(nameRegex(str) == true)
{
return false;
}
}

if((ctName.value == '') || (checkName(ctName.value) == false))
{
alert('Please enter an appropriate course name');
ctName.focus();
return false;
}

This validation does not occur when I enter one of the characters.

 

[akaballa123]

never mind...my logic was incorrect..thx anywyz