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853天前<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> |
<html xmlns="http://www.w3.org/1999/xhtml"> |
<head> |
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> |
<title>JavaScript计算器</title> |
<style type="text/css"> |
input { |
background-color: #CCC; |
width: 70px; |
height: 40px; |
} |
table { |
background-color: #999; |
border: 3px solid #666; |
padding: 3px; |
} |
.result { |
width: 420px; |
background-color: #999; |
margin-bottom: 10px; |
font-family: "微软雅黑", Verdana, sans-serif, "宋体"; |
font-size: 14px; |
color: #FFF; |
padding-left: 20px; |
} |
.clear { |
width: 146px; |
} |
</style> |
</head> |
<script language="JavaScript"> |
var baseoper; |
var digitstate; |
var num1; |
var operstate; |
function setStartState() { |
digitstate = "beempty"; |
num1 = 0; |
baseoper = "beempty"; |
operstate = false; |
} |
function add(i) { |
if (operstate) { |
cal.total.value = i; |
operstate = false; |
} else { |
if (cal.total.value == "0") { |
cal.total.value = i; |
digistate = "bein"; |
} else |
cal.total.value += i; |
} |
} |
function cleartext() { |
cal.total.value = "0"; |
digitstate = "beempty"; |
basestate = "beempty" |
} |
function count() { |
if (baseoper != "beempty") { |
switch (baseoper) { |
case "+": |
num1 = parseFloat(num1) + parseFloat(cal.total.value); |
break; |
case "-": |
num1 = parseFloat(num1) - parseFloat(cal.total.value); |
break; |
case "*": |
num1 = parseFloat(num1) * parseFloat(cal.total.value); |
break; |
case "/": |
num1 = parseFloat(num1) / parseFloat(cal.total.value); |
break; |
} |
preoper = true; |
cal.total.value = num1; |
} |
baseoper = "beempty"; |
} |
function useFunc(func) { |
switch (func) { |
case "sin": |
cal.total.value = Math.sin(cal.total.value); |
break; |
case "cos": |
cal.total.value = Math.cos(cal.total.value); |
break; |
case "asin": |
cal.total.value = Math.asin(cal.total.value); |
break; |
case "acos": |
cal.total.value = Math.acos(cal.total.value); |
break; |
case "tan": |
cal.total.value = Math.tan(cal.total.value); |
break; |
case "atan": |
cal.total.value = Math.atan(cal.total.value); |
break; |
case "log": |
cal.total.value = Math.log(cal.total.value); |
break; |
case "exp": |
cal.total.value = Math.exp(cal.total.value); |
break; |
case "sqrt": |
cal.total.value = Math.sqrt(cal.total.value); |
break; |
case "1/x": |
cal.total.value = 1 / cal.total.value; |
break; |
} |
operstate = true; |
} |
function addPoint() { |
if (digitstate == "bein" || digitstate == "beempty") { |
cal.total.value += "."; |
digistate = "befloat"; |
} |
} |
function setOper(oper) { |
operstate = true; |
if (baseoper == "beempty") { |
num1 = 0 + cal.total.value; |
baseoper = oper; |
} else { |
count(); |
baseoper = oper; |
} |
} |
</script> |
<body onload="setStartState()"> |
<h2>JavaScript计算器</h2> |
<form name="cal"> |
<table cellpadding="0" cellspacing="0"> |
<tr align="center"> |
<td colspan="6"><input class="result" type="Text" name="total" |
size="25" value="0"></td> |
</tr> |
<tr align="center"> |
<td><input type="Button" value="sin" onclick="useFunc('sin')"></td> |
<td><input type="Button" value="cos" onclick="useFunc('cos')"></td> |
<td><input type="Button" value="1" onclick="add('1')"></td> |
<td><input type="Button" value="2" onclick="add('2')"></td> |
<td><input type="Button" value="3" onclick="add('3')"></td> |
<td><input type="Button" value="+" onclick="setOper('+')"></td> |
</tr> |
<tr align="center"> |
<td><input type="Button" value="asin" onclick="useFunc('asin')"></td> |
<td><input type="Button" value="acos" onclick="useFunc('acos')"></td> |
<td><input type="Button" value="4" onclick="add('4')"></td> |
<td><input type="Button" value="5" onclick="add('5')"></td> |
<td><input type="Button" value="6" onclick="add('6')"></td> |
<td><input type="Button" value="-" onclick="setOper('-')"></td> |
</tr> |
<tr align="center"> |
<td><input type="Button" value="tan" onclick="useFunc('tan')"></td> |
<td><input type="Button" value="atan" onclick="useFunc('atan')"></td> |
<td><input type="Button" value="7" onclick="add('7')"></td> |
<td><input type="Button" value="8" onclick="add('8')"></td> |
<td><input type="Button" value="9" onclick="add('9')"></td> |
<td><input type="Button" value="x" onclick="setOper('*')"></td> |
</tr> |
<tr align="center"> |
<td><input type="Button" value="log" onclick="useFunc('log')"></td> |
<td><input type="Button" value="exp" onclick="useFunc('exp')"></td> |
<td><input type="Button" value="0" onclick="add('0')"></td> |
<td><input type="Button" value="." onclick="addPoint()"></td> |
<td><input type="Button" value="c" onclick="cleartext()"></td> |
<td><input type="Button" value="÷" onclick="setOper('/')"></td> |
</tr> |
<tr align="center"> |
<td><input type="Button" value="sqrt" onclick="useFunc('sqrt')"> |
<td><input type="Button" value="1/x" onclick="useFunc('1/x')"> |
<td><input type="Button" value="pi" |
onclick="cal.total.value=Math.PI"></td> |
<td><input type="Button" value="E" |
onclick="cal.total.value=Math.E"></td> |
<td colspan=2><input class="clear" type="Button" value="=" |
onclick="count()"></td> |
</tr> |
</table> |
</form> |
</body> |
</html> |
高级设计师
by: 神马 发表于：2012-09-11 10:52:05 顶(1) | 踩(0) 回复
漂亮！
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