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Asked: 2026-05-27T09:37:46+00:00

I wrote a script in php. It’s very simple, it just multiplies a typed

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I wrote a script in php. It’s very simple, it just multiplies a typed in number and adds another number to it. But I don’t know how to convert it to js.

From the form on my html page, I submit the kilometers and the script calculates the cost of this ride (it’s a taxi company).

<form action="http://www.mydomain.de/action.php" class="box style" method="post" target="_blank">

<fieldset>
    <legend>Jetzt berechnen:</legend>
    <div style="float: left;"><label for="km">KM-Eingabe</label> <input name="km" type="Text"></div><div><input src="/images/berechnen.png" alt="berechnen" type="image"></div>
</fieldset>

</form>

The php script is this:

<p>
Sie haben angegeben, dass die geplante Fahrt <?php echo $_POST["km"];?> km betr&auml;gt.
<br />
Im  Tagtarif (werktags 06-22 Uhr) kostet die angefragte Fahrt <?php $km=$_POST["km"]; echo $km * 1.7 + 2.2; ?> EURO.
<br />
Im Nachttarif / Sonn- und Feiertags (werktags 22-06 Uhr) kostet die angefragte Fahrt <?php $km=$_POST["km"]; echo $km * 1.8 + 2.2;?> EURO.
</p>
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1 Answer

  1. Editorial Team

    You should probably learn the basics of Javascript, but hopefully this will help you get started

    <fieldset>
    <legend>Jetzt berechnen:</legend>
    <div style="float: left;"><label for="km">KM-Eingabe</label> <input id="txt_km" type="Text"></div><div><input src="/images/berechnen.png" alt="berechnen" type="image" onclick="submit()" /></div>
</fieldset>

<div id="resultDiv" style="display: none;">
   <p>
       Sie haben angegeben, dass die geplante Fahrt <span id="km"></span> km betr&auml;gt.
   <br />
       Im  Tagtarif (werktags 06-22 Uhr) kostet die angefragte Fahrt <span id="result"></span> EURO.
   <br />
   Im Nachttarif / Sonn- und Feiertags (werktags 22-06 Uhr) kostet die angefragte Fahrt <span id="result2" /> EURO.
   </p>
</div>

<script>
   function submit()
   {
       var km = parseInt(document.getElementById('txt_km').value);
       document.getElementById('km').innerHTML = km;
       document.getElementById('result').innerHTML = km * 1.7 + 2.2;
       document.getElementById('result2').innerHTML = km * 1.8 + 2.2;
       document.getElementById('resultDiv').style.display = '';
   }
</script>
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