Számológép

0

7 8 9 / 4 5 6 * 1 2 3 - 0 +/- . + C =

 

Kód:

 

<TABLE
style="BORDER-LEFT-COLOR: black; BORDER-BOTTOM-COLOR: black; BORDER-TOP-COLOR: black; BORDER-RIGHT-COLOR: black"
onclick=previouskey=event.srcElement.innerText cellSpacing=0 cellPadding=0
width=200 bgColor=#000000 border=2>
<TBODY>
<TR>
<TD id=result style="FONT: bold 20px Verdana; COLOR: black; TEXT-ALIGN: right"
width="100%" bgColor=#ffffff>0</TD></TR>
<TR>
<TD vAlign=center align=middle width="100%">
<TABLE style="FONT: bold 20px Verdana; COLOR: white" cellSpacing=0 cellPadding=0
width="100%" border=0>
<TBODY>
<TR>
<TD align=middle width="80%">
<TABLE onselectstart="return false"
onmouseover="if (event.srcElement.tagName=='TD')event.srcElement.style.color='yellow'"
style="FONT: bold 20px Verdana; CURSOR: hand; COLOR: white" onclick=calculate()
onmouseout="event.srcElement.style.color='white'" height=82 cellSpacing=0
cellPadding=0 width="100%" border=1>
<TBODY>
<TR>
<TD align=middle width="25%" height=17>7</TD>
<TD style="COLOR: white" align=middle width="25%" height=17>8</TD>
<TD style="COLOR: white" align=middle width="25%" height=17>9</TD>
<TD style="COLOR: white" align=middle width="25%" height=17>/</TD></TR>
<TR>
<TD align=middle width="25%" height=19>4</TD>
<TD align=middle width="25%" height=19>5</TD>
<TD align=middle width="25%" height=19>6</TD>
<TD align=middle width="25%" height=19>*</TD></TR>
<TR>
<TD style="COLOR: white" align=middle width="25%" height=19>1</TD>
<TD style="COLOR: white" align=middle width="25%" height=19>2</TD>
<TD style="COLOR: white" align=middle width="25%" height=19>3</TD>
<TD style="COLOR: white" align=middle width="25%" height=19>-</TD></TR>
<TR>
<TD align=middle width="25%" height=19>0</TD>
<TD onclick=pn();previouskey=1;event.cancelBubble=true align=middle width="25%"
height=19>+/-</TD>
<TD align=middle width="25%" height=19>.</TD>
<TD align=middle width="25%" height=19>+</TD></TR></TBODY></TABLE></TD>
<TD width="20%">
<DIV align=left>
<TABLE cellSpacing=0 cellPadding=0 width="100%" border=1>
<TBODY>
<TR>
<TD
style="FONT: bold 20px Verdana; CURSOR: hand; COLOR: white; TEXT-ALIGN: center"
onclick="result.innerText=0;results=''"
width="100%">C</TD></TR></TBODY></TABLE></DIV>
<DIV align=left>
<TABLE height=81 cellSpacing=0 cellPadding=0 width="100%" border=1>
<TBODY>
<TR>
<TD onmouseover="event.srcElement.style.color='yellow'"
style="FONT: bold 32px Verdana; CURSOR: hand; COLOR: white; TEXT-ALIGN: center"
onclick=calculateresult() onmouseout="event.srcElement.style.color='white'"
width="100%">=</TD></TR></TBODY></TABLE></DIV></TD></TR></TBODY></TABLE></TD></TR></TBODY></TABLE>
<SCRIPT language=JavaScript1.2>

/*
DHTML Calculator Script-
© Dynamic Drive (www.dynamicdrive.com)
For full source code, installation instructions,
100's more DHTML scripts, and Terms Of
Use, visit dynamicdrive.com
*/

var results=''
var previouskey=''
var re=/(\/|\*|\+|-)/
var re2=/(\/|\*|\+|-){2}$/
var re3=/.+(\/|\*|\+|-).+/
var re4=/\d|\./
var re5=/^[^\/\*\+].+\d$/
var re6=/\./

function calculate(){
if (event.srcElement.tagName=="TD"){
if (event.srcElement.innerText.match(re4)&&previouskey=="=")
results=''
if (result.innerText.match(re3)&&event.srcElement.innerText.match(re)){
if (!results.match(re5)){
result.innerText="Error!"
return
}
results=eval(results)
if (results.toString().length>=12&&results.toString().match(re6))
results=results.toString().substring(0,12)
result.innerText=results
}

results+=event.srcElement.innerText
if (results.match(re2))
results=results.substring(0,results.length-2)+results.charAt(results.length-1)

result.innerText=results
}
}

function calculateresult(){
if (!results.match(re5)){
result.innerText="Error!"
return
}
results=eval(results)
if (results.toString().length>=12&&results.toString().match(re6))
results=results.toString().substring(0,12)
result.innerText=results
}

 

function pn(){
if (result.innerText.charAt(0)!='-')
result.innerText=results='-'+result.innerText
else if (result.innerText.charAt(0)=='-')
result.innerText=results=result.innerText*(-1)
}

</SCRIPT>