data in empty textfield

[tomvdduin]

I want to test a textfield if it is not empty. i tried:
!=''
!=null
!= '0'
!=0

but when a textfield is empty, all the above is false.

How can I test a textfield if it is not empty?

 

[mwolf00]

myText = document.myForm.textField.value

if (myText == ""){
alert("The field is empty")
}

Programming today is a race between software engineers striving to build better and bigger idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning. - Rick Cook (No, I'm not Rick)

 

[tomvdduin]

mwolf00,

I appreciate your reaction, but that doesn't work either.

I have the following:
if (this.document.form_abonnement.ABO_SRE_PK_DEB.value!="")
{
blabla
}

that's the correct syntax, right?

I also alerted the value of the textbox, and there is noting printed on the alertbox.

 

[kaht]

You do understand that what you have posted will evaluate true only if something IS inside the textbox, right? Since you are checking (texfield != ""), blabla is executed only if there is something in the textfield. If you want blabla to be executed only when the textfield is blank, change your if statement to this:

if (document.form_abonnement.ABO_SRE_PK_DEB.value == "")

-kaht

 

[LFI]

Your syntax is correct. Since you get the blank alert message, your spelling must be correct too. Check to make sure your text field doesn't accidentally have a blank space in it.

It might be helpful if we saw more code (the whole JS function and the HTML surrounding the text field).

--Dave

 

[mwolf00]

You may have spaces in the input box...

try this

<script>
function LTrim(strValue){
  var LTRIMrgExp = /^\s */;
  return strValue.replace(LTRIMrgExp, '');
}
function RTrim(strValue){
  var RTRIMrgExp = /\s *$/;
  return strValue.replace(RTRIMrgExp, '');
}

function checkVal(){
  myText = LTrim(RTrim(document.myForm.textField.value))
  if (myText != ""){
    //add your code here
  }
}

</script>

Programming today is a race between software engineers striving to build better and bigger idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning. - Rick Cook (No, I'm not Rick)

 

[tomvdduin]

Hmm, ok when I use:
if (this.document.form_abonnement.ABO_SRE_PK_DEB.value==""), it works correctly.

It is part of a larger piece of code, and because of the complexity, I did it wrong.

stupid me...