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Editorial Team
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Asked: 2026-05-13T16:48:43+00:00

I am trying to have a user imput data into several fields, then I

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I am trying to have a user imput data into several fields, then I want to be able to add that value and take a percentage of it. I realize that I could just add the variables, however I would like the user to be able to see the total and the percentage. If you would like to look at the site just for reference,
http://clubs.psu.edu/bk/sga/eform/budget.php
thanks!

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1 Answer

  1. Editorial Team

    im not sure what do you mean, but if you just want user to fill the form and then do some math on the results, you can do simply like that:

    $total = $_POST['field1'] + $_POST['field2'] + ... etc.

    then:

    $percentage = /* here some math for computing percentage */;

    and just display both in your template.

    UPDATE

    ok, so try something like that (with newest jQuery, just modify it to your needs):

    <html>
    <head>
        <script src="http://code.jquery.com/jquery-latest.js"></script>
    </head>
<body>
    1st number: <input type="text" id="f1" value="0"/><br/>
    2nd number: <input type="text" id="f2" value="0"/><br/>
    <p></p>
    <script>
        $("input").keyup(function () {
            var add = parseInt($("#f1").val())+parseInt($("#f2").val());
            var per = parseInt($("#f1").val())/parseInt($("#f2").val())*100;
            $("p").html("add: "+add+"<br/>number1 is "+per+"% of number2");
        }).keyup();
    </script>
</body>
</html>

    that is what u expect?

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