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Editorial Team
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Asked: 2026-05-26T00:33:02+00:00

I created a file called page.php with the below code. <!DOCTYPE HTML> <html> <body>

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I created a file called “page.php” with the below code.

<!DOCTYPE  HTML>
<html>
    <body>
        <?php
            require 'form.php';
        ?>
        <a href="#" onclick="call_popup('form_container')">Click this link!</a>
   </body>
</html>

And I created another file “form.php” with the below code:

<script type="text/javascript">
    function call_popup (container_id) {
        var id= document.getElementById(container_id);
        alert(id);
    }
</script>
<div id="form_container">
    <form>
        <input type="text" />
        <input type="button" value="submit" />
    </form>
</div>

I am trying to call the “call_popup(container_id)” function in “page.php” which is defined in “form.php”. When I click the “Click this link!” of the anchor tag it gives an error saying call_popup('form_container') not found!

Where did I go wrong?

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1 Answer

  1. Editorial Team

    You need to add this in the beginning of “page.php”:

    require_once("form.php");

    But I am not sure that works with JavaScript functions..

    Try create a JavaScript file, “file.js”, and reference it in two PHP files:

    <script src="file.js" type="text/javascript" />
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