Check letters, numbers and special characters

[Paul_Wilkins]

@Miguel61

I confirm: this script not working and all javascript in my computer work properly without problems.

The form validate even with invalid characters in the input name=‘data’.

Are you using IE, Firefox, Chrome, Opera, Safari?

If IE, have you enabled the advanced notification about script errors? I ask because any kind of script failure fails to prevent the form from being submitted.

I normally test in Chrome, but when I use IE to test your page with that setting enabled, I do see an error occur. I’ll investigate further and find out what is causing the problem.

@Miguel61

But it’s not important, I can find other solution for my problem.

Regards and thanks for ur time.

Oh, I see. Okay.

[Paul_Wilkins]

The problem that you’re facing with IE is that IE is dumber than your average browser.
The regular expression needs to use the exec() method to pass the string.

var result = /^[a-z0-9\\.;,:''\\s]{1,100}$/i[color="green"].exec[/color]( theForm.data.value );

So this code allows IE to work properly.

var result = /^[a-z0-9\\.;,:''\\s]{1,100}$/i.exec( theForm.data.value );

[Miguel61]

@paul_wilkins

The problem that you’re facing with IE is that IE is dumber than your average browser.
The regular expression needs to use the exec() method to pass the string.

var result = /^[a-z0-9\\.;,:''\\s]{1,100}$/i[color="green"].exec[/color]( theForm.data.value );

So this code allows IE to work properly.

var result = /^[a-z0-9\\.;,:''\\s]{1,100}$/i.exec( theForm.data.value );

Thanks Sir, now this code working.

[Logic_Ali]

@Miguel61

Dear friend, try it yourself:
http://www.avia-it.com/testaruba/_check.htm

This code not working…

I.E. won't execute the regex directly, so [I]exec[/I] must be called...

The regex you're using cannot differentiate between bad input and no input,
which dictates testing to ensure that the string has a length.

<script type='text/javascript'>

function checkForm( theForm )
{
  var result = /^[a-z0-9\\.;,:'\\s]{1,100}$/i.exec( theForm.data.value );  
 
  if( !result )
  {
     alert( theForm.data.value.length ? "Illegal characters entered" : "No legal characters entered");
  }
   
  return !!result; 
}
</script>

[Miguel61]

Thanks Sir!