Get the return value of a javascript function from inside a form

Question

I have this form

<form action="<?php echo $response ?>?nexturl=<?php echo $nexturl ?>"
 method="post" enctype="multipart/form-data" onsubmit="return saveFile(); ">
 <input id = "file" name="file" type="file" style="border:none;"/>

I would like to do something like this:

return $action = saveFile();

I want to store the return value of saveFile() Which is a JavaScript code that returns a boolean into a PHP variable. How can I do this?

Rayon · Accepted Answer · 2015-05-27 05:51:51Z

1

Preserve the value in hidden input field and then submit the form: Like this:

function saveFile()
{
    var val=true;
    var input=document.createElement("input");
    input.setAttribute("type", "hidden");
    input.setAttribute("name", "booleanValue");
    input.setAttribute("value", val);
    document.getElementById("form").appendChild(input);
}

To retrieve this value in php:

$myBoolean=$_REQUEST['booleanValue'];

edited May 27, 2015 at 5:51

answered May 27, 2015 at 5:46

Rayon

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1 Comment

J_Strauton Over a year ago

Can you show how I would call the created element from php?

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