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Editorial Team
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Asked: 2026-06-14T16:51:28+00:00

I’m building a Visualforce page in which a form needs to be filled in.

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I’m building a Visualforce page in which a form needs to be filled in. In the form there is a Lookup field to lookup an Account. After you’ve done this an AJAX calls should be done to update something else. The id of the selected item must be passed to this JS function.

The code for the inputField looks like this: 

<apex:inputField value="{!Account}" id="acct" onchange="doSomething(this.value);" />

So in the code above, doSomething() must get the id as an argument. In the current form, this.value contains the name of the selected item. Can I get the id, and if so, how?

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  1. Editorial Team

    Inspect the generated markup with Firebug or similar tool. Each lookup field consists of several input fields (one is visible, rest is hidden).

    example

    (in my example I’ve explicitly put id attribute on all tags from the top (apex:page, form block, section and finally the input field. If you don’t do it you’ll get autogenerated names).

    So what you need to do:

    1. from this go to parent tag (this.parentNode should work in plain DOM, of course jQuery is always advised 😉)
    2. And get the child input field with Id ending with acct_lkold

    Probably “previousSibling” will work too?

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