how to getAttribute of value

[maminx]

Hello all,, i have a question, please help me to find out

i have this script (in js function)
[CODE=javascript]var td = document.create Element('td');
var p = document.create Element('p');
var label = document.create Element('label' );
var span = document.create Element('span') ;
var theTextarea = document.create Element('textar ea');
theTextarea.set Attribute('name ', 'work_descripti on');
theTextarea.set Attribute('valu e','');
span.appendChil d(theData);
label.appendChi ld(span);
label.appendChi ld(theTextarea) ;
p.appendChild(l abel);
td.appendChild( p);
row.appendChild (td);
theTextarea.onc hange = function(){theT extarea.getAttr ibute('value')) ;}
[/CODE]
With command "theTextarea.on change...", i want to get a value from html object form (textarea) that has been input by user.
But with that command, i always get null (empty string) value.

Any idea??thanks

[acoder]

theTextarea should be replaced by 'this':[CODE=javascript]
theTextarea.onc hange = function(){this .getAttribute(' value'));}[/CODE]
PS. please use code tags when posting code. See How to Ask a Question.

[maminx]

ok thanks, it works perfectly..

[hsriat]

And remove the extra bracket after ('value')

[acoder]

And remove the extra bracket after ('value')

Oh, I didn't see that. Thanks for pointing out :)

[acoder]

ok thanks, it works perfectly..

Glad to hear it. If you have any more questions, just post back to the forum.

PS. welcome to the site. I notice that you've just joined. Happy posting!

[hsriat]

Oh, I didn't see that. Thanks for pointing out :)

You are welcome. :)
(Perhaps this is the first time)

[acoder]

Lol, there's always a first time for everything ;)

[maminx]

actually, with that command, i want to make a validation. So if the object textarea is empty or user doesn't input text to the object textarea, than i will generate an alert ("required field...")..

and of course, first i'd like to get a value that user input from the textarea object with this script

theTextarea.onc hange = function(){
alert(this.getA ttribute('value '));
}


It is works perfectly with that command, and no error founded, but the alert is shown if user input any character to the textarea object.
If user didn't input a value (it means user press "tab" to jump from the textarea object to another object), the alert of value won't come out.

So the alert is shown if only the user input a value to the textarea object.

any idea?

[hsriat]

I guess you are in need of onblur event.

[maminx]

i have changed into onblur event, but still, it won't work..more advice?

[acoder]

You have to check the input. Check if it's empty or whatever other checks you want to make. Note though that onblur can sometimes fire unexpectedly, so I wouldn't use alerts (which can be annoying). I'd use DHTML to show a message next to the field.