Rechenscript mit Variable

[dadie]

Klappt nun 1A ^^

HTML-Code:

<script language="JavaScript">
function getX()
{
 var x1 = document.getElementById("X").value ;

 var Z = Math.floor(((3,5 * (x1*x1)) + ((70 * x1) + 500))) ;
 
 if(x1 > 101 || x1 < 0)
 {
   Z = "Error 01" ;
 }

 document.getElementById("Z").value  = Z ;

}

</script>


<input name="X"  /><br>
<input id="Z" readonly="readonly" /><br>
<input type="submit" value="Submit" onclick="getX()" />