Миникалькулятор

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

Просмотр скрипта

<DIV align="left"><TABLE border="2" width="150" height="120" cellspacing="0" cellpadding="0" bgcolor="#000000" style="border-color:black" onClick="previouskey=event.srcElement.innerText"><TR><TD width="100%" bgColor="#F8F7F8" id="result" style="font:bold 10px Verdana;color:black;text-align='right'">0</TD></TR><TR><TD width="100%" valign="middle" align="center"><TABLE border="0" width="100%" cellspacing="0" cellpadding="0" style="font:bold 10px Verdana;color:black" bgColor="#808080"><TR><TD bgColor="#909090" width="80%" align="center"><TABLE border="1" width="100%" cellspacing="0" cellpadding="0" style="cursor:hand;font:bold 10px Verdana;color:black" onMouseover="if (event.srcElement.tagName=='TD')event.srcElement.style.color='red'" onMouseout="event.srcElement.style.color='white'" onselectStart="return false" onClick="calculate()" height="82"><TR><TD width="25%" align="center" height="17">7</TD><TD width="25%" align="center" height="17">8</TD><TD width="25%" align="center" height="17">9</TD><TD width="25%" align="center" height="17">/</TD></TR><TR><TD width="25%" align="center" height="19">4</TD><TD width="25%" align="center" height="19">5</TD><TD width="25%" align="center" height="19">6</TD><TD width="25%" align="center" height="19">*</TD></TR><TR><TD width="25%" align="center" height="19">1</TD><TD width="25%" align="center" height="19">2</TD><TD width="25%" align="center" height="19">3</TD><TD width="25%" align="center" height="19">-</TD></TR><TR><TD width="25%" align="center" height="19">0</TD><TD width="25%" align="center" height="19" onClick="pn();previouskey=1;event.cancelBubble=true">+/-</TD><TD width="25%" align="center" height="19">.</TD><TD width="25%" align="center" height="19">+</TD></TR></TABLE></TD><TD width="20%"><DIV align="left"><TABLE border="1" width="100%" cellspacing="0" cellpadding="0"><TR><TD width="100%" style="cursor:hand;font:bold 10px Verdana;color:white;text-align:center" onClick="result.innerText=0;results=''">C</TD></TR></TABLE></DIV><DIV align="left"><TABLE border="1" width="100%" cellspacing="0" cellpadding="0" height="81"><TR><TD width="100%" style="cursor:hand;font:bold 12px Verdana;color:white;text-align:center" onMouseover="event.srcElement.style.color='yellow'" onMouseout="event.srcElement.style.color='white'" onClick="calculateresult()">=</TD></TR></TABLE></DIV></TD></TR></TABLE></TD></TR></TABLE>
<script language="JavaScript1.2">
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>
</form> <br>

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