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How to get parent object from child object?

maheshexp asked
Last Modified: 2012-05-05
I've two problems.
Retreiving parent objects.

1. Inside a form I've a button. Now on the click of button , I invoke a method. Now how to get the form object reference inside the button or method, which button invokes.

<button onclick"x()" >SOme Button</button>

function x()
   /* code which gets the button object reference */

Now inside the function x(), I need the "button" object reference. How do I get it?.
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Top Expert 2007

use "this" to give the button object to the function like
function x(button) { ... }

<button onclick="x(this)">...

The in x you can access the button via the variable button

use this.form

<button onclick"x(this.form)" >


No my fuction x() doesn't take any arguments. That's the problem here...

Is there something preventing you from changing the x() function?  Passing the argument is the simplest solution to your question, so if you can go that route, you should.


yeah, the function x() signature is automatically generated. I can only have logic for that using the given arguments. Other than that, I can't change the signature.
Top Expert 2007

can you add an id to the form name or do you have multiple forms on the page? If you can't change the signature and can't use ids it's AFAIK not possible to get the caller-object of the function.
Top Expert 2007
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