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Editorial Team
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Asked: 2026-06-07T09:37:57+00:00

I have a simple form like this one: <form ENCTYPE=multipart/form-data action=upload.php method=POST> <p>UPLOAD FILE:

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I have a simple form like this one:

<form ENCTYPE="multipart/form-data" action="upload.php" method="POST">
<p>UPLOAD FILE: <input type="file" name="file1"> <br /></p>
<input type="submit" value="Upload">
<input type="hidden" name="email" id="email" value="">
</form>

I have to set the value of the hidden field to an email like “email@email.com”.
I can obtain this value from adding a querystring parameter by external iframe like:

<iframe name="email@email.com" src="index.html?email=email@email.com">

Ok. But how can I set value=”” to value=”email@email.com”?
I know have to use javascript, but I dunno how to deal with the var.

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1 Answer

  1. Editorial Team
    document.getElementById('Id').value='new value';

    answer to comment:
    try this:

    <input type="" name="email" id="email">

<iframe id="frm" name="email@email.com" src="index.html?email=email@email.com">
</iframe>

<script>
document.getElementById('email').value = document.getElementById('frm').name;
</script>

    then you can change adopt it. change type to hidden and etc.

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