newbie help with getelementbyid

[Joshhhhh]

I have the following function:
<script language="JavaScript" type = "text/javascript">
function returnObjById( id )
{
var returnVar = document.getElementById(id);
return returnVar.value;
}
</script>

How can I transmit the value of the function to the value of the textfield

<input type="text" value="???"/>

 

[southbeach]

You are not providing sufficient information to give you an exact answer but here it goes:

The syntax you are using works if the function returnObjByID() is called by a 2nd function which in turn will use the returned value to inject it in the field object. If that is the case, there might be a degree of redundancy.

That being said, you need to have a name or an ID assigned to the input object field for you to reference it through your JS. So, if you wanted to inject value to a field you will then use:

document.getDocumentById(id).value='some value';

You could also use

document.form_name.field_name.value='some value';

As you can see, you need a name or an ID.

Now, to best answer your question you will need to be specific as to how you intend to use the above function.

Hope this helps!


--
SouthBeach
The good thing about not knowing is the opportunity to learn - Yours truly, 2008.

 

[feherke]

Hi

As you can see, you need a name or an ID.

Or not, if you refer it by order number. For example the first [tt]form[/tt]'s first field :

document.forms[0].elements[0].value='some value'

Feherke.

http://rootshell.be/~feherke/

 

[BillyRayPreachersSon]

How can I transmit the value of the function to the value of the textfield

Something like:

yourObjRef.value = returnObjById(someId);

Hope this helps,
Dan



Coedit Limited - Delivering standards compliant, accessible web solutions

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

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

[/tt]

 

[Joshhhhh]

Thank you very much .

 

[southbeach]

@feherke,

Or not, if you refer it by order number. For example the first form's first field :

document.forms[0].elements[0].value='some value'

What would happen if new objects are added above this one? It seems that the code will break since what was once element 0 may shift and become an entirely different one.

I can see where this could be useful but cannot see how in this case if OP is looking to hit a specific object; which no matter where in the form it is found it must be unique.

That said, I get your point of that name and/or ID are not exclusive methods to reference an object.



--
SouthBeach
The good thing about not knowing is the opportunity to learn - Yours truly, 2008.