Webmaster - Java-Script

Rechner

Quellcode:

Body-Tag

<script LANGUAGE="JavaScript">
<!-- ... Quelle Beispiel ...

function Ergebnis()
{
	document.rechner.anzeige.value	= eval(document.rechner.anzeige.value)
}

function Loeschen()
{
	document.rechner.anzeige.value	= ""
}

function Ergaenzen(Zeichen)
{
	document.rechner.anzeige.value	+= Zeichen
}

function Funktion(FktName)
{
	document.rechner.anzeige.value	= Math[FktName](eval(document.rechner.anzeige.value))
}

// -->
</script> </p>

<form NAME="rechner">
  <div align="center"><center><table BORDER="4" CELLPADDING="8" BGCOLOR="gray">
    <tr ALIGN="CENTER">
      <td COLSPAN="4" BGCOLOR="blue"><input TYPE="TEXT" NAME="anzeige" VALUE SIZE="30"
      MAXLENGTH="30"></td>
    </tr>
    <tr ALIGN="CENTER">
      <td WIDTH="25%"><input TYPE="BUTTON" VALUE=" 7 " onClick="Ergaenzen('7')"></td>
      <td WIDTH="25%"><input TYPE="BUTTON" VALUE=" 8 " onClick="Ergaenzen('8')"></td>
      <td WIDTH="25%"><input TYPE="BUTTON" VALUE=" 9 " onClick="Ergaenzen('9')"></td>
      <td WIDTH="25%" BGCOLOR="yellow"><input TYPE="BUTTON" VALUE=" + " onClick="Ergaenzen('+')"></td>
    </tr>
    <tr ALIGN="CENTER">
      <td><input TYPE="BUTTON" VALUE=" 4 " onClick="Ergaenzen('4')"></td>
      <td><input TYPE="BUTTON" VALUE=" 5 " onClick="Ergaenzen('5')"></td>
      <td><input TYPE="BUTTON" VALUE=" 6 " onClick="Ergaenzen('6')"></td>
      <td BGCOLOR="yellow"><input TYPE="BUTTON" VALUE=" - " onClick="Ergaenzen('-')"></td>
    </tr>
    <tr ALIGN="CENTER">
      <td><input TYPE="BUTTON" VALUE=" 1 " onClick="Ergaenzen('1')"></td>
      <td><input TYPE="BUTTON" VALUE=" 2 " onClick="Ergaenzen('2')"></td>
      <td><input TYPE="BUTTON" VALUE=" 3 " onClick="Ergaenzen('3')"></td>
      <td BGCOLOR="yellow"><input TYPE="BUTTON" VALUE=" * " onClick="Ergaenzen('*')"></td>
    </tr>
    <tr ALIGN="CENTER">
      <td><input TYPE="BUTTON" VALUE=" 0 " onClick="Ergaenzen('0')"></td>
      <td><input TYPE="BUTTON" VALUE=" , " onClick="Ergaenzen('.')"></td>
      <td BGCOLOR="yellow"><input TYPE="BUTTON" VALUE=" = " onClick="Ergebnis()"></td>
      <td BGCOLOR="yellow"><input TYPE="BUTTON" VALUE=" / " onClick="Ergaenzen('/')"></td>
    </tr>
    <tr ALIGN="CENTER">
      <td BGCOLOR="green"><input TYPE="BUTTON" VALUE=" sqrt " onClick="Funktion('sqrt')"></td>
      <td BGCOLOR="green"><input TYPE="BUTTON" VALUE=" exp " onClick="Funktion('exp')"></td>
      <td BGCOLOR="green"><input TYPE="BUTTON" VALUE=" log " onClick="Funktion('log')"></td>
      <td BGCOLOR="red"><input TYPE="BUTTON" VALUE=" C " onClick="Loeschen()"></td>
    </tr>
  </table>
  </center></div>
</form>