Using JavaScript to send input to a url and control a iframe until submit?

I have a basic html setup:

        <input id="input_data" type="text" />
    <input id="submit_data" type="submit" value="submit" />
<br />
<iframe name="Frame1" id="Frame1" src="~/d/Test.php?DataId=(This is where I need input data)" ></iframe>

I've looked over some similar titles and the methods didn't work. Prehaps I'm doing something wrong completely as the iframe shouldn't even do anything until submit is pressed.