Control name as Script parameter

[Tom Szabo]

Hi All,

My next little hurdle is how to pass a controls name to a function to access
the control inside the function:

Say I have the followind function:

function jblf_use(nId, cName) {
doc = this.opener.document;
doc.TASK_FORM_Form.Customer_ID.value = nId;
doc.TASK_FORM_Form.Customer_ID_SLE.value = cName;
}

To make it more generic, I would need to pass the name of the control, in
this case "Customer_ID" as a parameter and somehow make use of it, but this
is where I am stuck. The syntax. I have books, but can't seem to find
anything...

function jblf_use(nId, cName, cControl) { // cControl
=="Customer_ID"
doc = this.opener.document;
doc.TASK_FORM_Form.Customer_ID.value = nId;
doc.TASK_FORM_Form.Customer_ID_SLE.value = cName;
}
TIA,

Tom

[RobG]

Tom Szabo wrote:

Hi All,

My next little hurdle is how to pass a controls name to a function to access
the control inside the function:

Presuming that TASK_FORM_Form is the name of a form:

function jblf_use(nId, cName, cControl) { // cControl =="Customer_ID"
doc = this.opener.document;
doc.TASK_FORM_Form.cControl.value = nId;
doc.TASK_FORM_Form.cControl+'_SLE'.value = cName;
}

You could also try:

doc.TASK_FORM_Form.elements[cControl].value = nId;
doc.TASK_FORM_Form.elements[cControl+'_SLE'].value = cName;

There are a few other options that may be available depending upon
how you are calling the function.

Rob.

[Michael Winter]

On Sun, 14 Nov 2004 18:34:35 +1000, RobG <rg***@iinet.net.auau> wrote:

[snip]

doc.TASK_FORM_Form.cControl.value = nId;
doc.TASK_FORM_Form.cControl+'_SLE'.value = cName;
That wouldn't work at all.

The second line would be treated as: "Assign nId to the value property of
the cControl element within the form, TASK_FORM_Form." That is, cControl
would be treated literally.

The third line would be: "First, assign the value of cName to the value
property of the string, '_SLE'. Second, obtain a reference to the cControl
element in the form, TASK_FORM_Form. Finally, concatenate the results of
steps 1 and 2."

[snip]
doc.TASK_FORM_Form.elements[cControl].value = nId;
doc.TASK_FORM_Form.elements[cControl+'_SLE'].value = cName;

Much better. :)

To the OP: An article in the FAQ notes give thorough treatment to
accessing form controls. See
<URL:http://www.jibbering.com/faq/faq_notes/form_access.html>.

Mike

--
Michael Winter
Replace ".invalid" with ".uk" to reply by e-mail.

[Tom Szabo]

"RobG" <rg***@iinet.net.auau> wrote in message
news:41***********************@per-qv1-newsreader-01.iinet.net.au...

Tom Szabo wrote:

Hi All,

My next little hurdle is how to pass a controls name to a function to access the control inside the function:

Presuming that TASK_FORM_Form is the name of a form:

function jblf_use(nId, cName, cControl) { // cControl =="Customer_ID"
doc = this.opener.document;
doc.TASK_FORM_Form.cControl.value = nId;
doc.TASK_FORM_Form.cControl+'_SLE'.value = cName;
}

You could also try:

doc.TASK_FORM_Form.elements[cControl].value = nId;
doc.TASK_FORM_Form.elements[cControl+'_SLE'].value = cName;

There are a few other options that may be available depending upon
how you are calling the function.

Rob.

Thanks Rob,

great, this is what I needed :-))))

Tom