javascript check form

pbryd · 10-11-2010, 03:13:45 PM

I've got a bit of javascript to to check a field in a form on my web page.

It's a competition so I need to make sure the visitor types it in correctly.

the javascript to check the 'answer' field is

Code:

 if (form.answer.value != "brabantia") {	
    alert( "oops! try again?" );
    form.answer.focus();	
    return false ;
  }
  return true ;
}

but this is case sensitive.

I'd like to add some kind of other check for "Brabantia" too.

The javascript needs to return true whether the visitor enters 'brabantia' or 'Brabantia'

Any help?

Phil

JDubya · 10-11-2010, 06:16:51 PM

PHP Code:

  if (form.answer.value != "brabantia" && form.answer.value != "Brabantia") {    

    alert( "oops! try again?" );

    form.answer.focus();    

    return false ;

  }

  return true ;

}

Just modifying the if condition to check for both...

Probably I would use match() http://www.w3schools.com/jsref/jsref_match.asp with a case-insensitve regular expression.

pbryd · 10-11-2010, 10:43:28 PM

Thanks JDubya

I haven't tried that yet but I did solve the problem

Instead of the javascript checker checking for lower and upper case I simply converted any uppercase to lower first in the html form on the page.

I used...

Code:

onChange="javascript:this.value=this.value.toLowerCase();"

pbryd · 12-11-2010, 09:07:46 AM

Quote:

Originally Posted by JDubya

PHP Code:

  if (form.answer.value != "brabantia" && form.answer.value != "Brabantia") {    

    alert( "oops! try again?" );

    form.answer.focus();    

    return false ;

  }

  return true ;

}

Thanks for this it works fine.

Another bit of useful code snippet to add to my library.

Cheers

10-11-2010, 03:13:45 PM	#1 (permalink)
pbryd Join Date: Mar 2007 Location: Newcastle Posts: 348 No Classified Ratings Domain Trader Rating: (0% / 0)	javascript check form I've got a bit of javascript to to check a field in a form on my web page. It's a competition so I need to make sure the visitor types it in correctly. the javascript to check the 'answer' field is Code: if (form.answer.value != "brabantia") { alert( "oops! try again?" ); form.answer.focus(); return false ; } return true ; } but this is case sensitive. I'd like to add some kind of other check for "Brabantia" too. The javascript needs to return true whether the visitor enters 'brabantia' or 'Brabantia' Any help? Phil

10-11-2010, 06:16:51 PM	#2 (permalink)
JDubya Member Join Date: Apr 2010 Location: Buenos Aires Posts: 83 No Classified Ratings Domain Trader Rating: (100% / 1)	PHP Code: `if (form.answer.value != "brabantia" && form.answer.value != "Brabantia") { alert( "oops! try again?" ); form.answer.focus(); return false ; } return true ; }` Just modifying the if condition to check for both... Probably I would use match() http://www.w3schools.com/jsref/jsref_match.asp with a case-insensitve regular expression.

10-11-2010, 10:43:28 PM	#3 (permalink)
pbryd Join Date: Mar 2007 Location: Newcastle Posts: 348 No Classified Ratings Domain Trader Rating: (0% / 0)	Thanks JDubya I haven't tried that yet but I did solve the problem Instead of the javascript checker checking for lower and upper case I simply converted any uppercase to lower first in the html form on the page. I used... Code: onChange="javascript:this.value=this.value.toLowerCase();"

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