CODE EXAMPLE FOR JAVASCRIPT

many button with many action in javascript

<form action="demo_form.php" method="get">

    Choose your favorite subject:

    <button name="subject" type="submit" value="html">HTML</button>
    <button name="subject" type="submit" value="css">CSS</button>
    <button name="subject" type="submit" value="javascript">JavaScript</button>
    <button name="subject" type="submit" value="jquery">jQuery</button>
</form>