高分求救html和javascript写的计算机代码绝对给分！

bj0828 2006-09-09 04:59:11

本人项目里用的急，希望各位GGJJ帮忙啊谢谢你们了。。。。。。。
本人是新手入门

...全文

182 8 打赏收藏转发到动态举报

写回复

用AI写文章

8 条回复

切换为时间正序

请发表友善的回复…

发表回复

laofu568 2006-09-09

打赏
举报

为什么一定要用JS呢?VB的eval()用来做计算器特别方便,可以计算整个表达式

wanru 2006-09-09

打赏
举报

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
<title>JavaScript计算器</title>
</head>
<script language="JavaScript">
var curState;
var curOper;
var num1;
var preOper;
function setStartState()
{
curState="beStart";
num1=0;
curOper="start";
preOper=false;
}
function addNum(i)
{
if(preOper)
{
cal.total.value=i;
preOper=false;
}
else
{
if(cal.total.value=="0")
{
cal.total.value=i;
curState="beInteger";
}
else
cal.total.value+=i;
}
}
function addPoint()
{
if(curState=="beStart"||curState=="beInteger")
{
cal.total.value+=".";
curState="beFloat";
}
}
function cleartext()
{
cal.total.value="0";
curState="beStart";
curOper="start"
}
function count()
{
if(curOper!="start")
{
switch(curOper)
{
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;
}
cal.total.value=num1;
preOper=true;
}
curOper="start";
}
function setOper(oper)
{
preOper=true;
if(curOper="start")
{
num1=0+cal.total.value;
curOper=oper;
}
else
{
count();
curOper=oper;
}
}
function useFunc(func)
{
switch(func)
{
case "sin":
cal.total.value=Math.sin(cal.total.value);
preOper=true;
break;
case "cos":
cal.total.value=Math.cos(cal.total.value);
preOper=true;
break;
case "asin":
cal.total.value=Math.asin(cal.total.value);
preOper=true;
break;
case "acos":
cal.total.value=Math.acos(cal.total.value);
preOper=true;
break;
case "tan":
cal.total.value=Math.tan(cal.total.value);
preOper=true;
break;
case "atan":
cal.total.value=Math.atan(cal.total.value);
preOper=true;
break;
case "log":
cal.total.value=Math.log(cal.total.value);
preOper=true;
break;
case "exp":
cal.total.value=Math.exp(cal.total.value);
preOper=true;
break;
case "sqrt":
cal.total.value=Math.sqrt(cal.total.value);
preOper=true;
break;
case "1/x":
cal.total.value=1/cal.total.value;
preOper=true;
break;
}
}
</script>
<body onload="setStartState()">
<font size=6>JavaScript计算器</font>
<form name="cal">
<table border="2" align="left">
<tr align="center">
<td colspan="6"><input type="Text" name="total" size="40" 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="addNum('1')">
</td>
<td><input type="Button" value=" 2 " onclick="addNum('2')">
</td>
<td><input type="Button" value=" 3 " onclick="addNum('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="addNum('4')">
</td>
<td><input type="Button" value=" 5 " onclick="addNum('5')">
</td>
<td><input type="Button" value=" 6 " onclick="addNum('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="addNum('7')">
</td>
<td><input type="Button" value=" 8 " onclick="addNum('8')">
</td>
<td><input type="Button" value=" 9 " onclick="addNum('9')">
</td>
<td><input type="Button" value=" * " 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="addNum('0')">
</td>
<td><input type="Button" value=" . " onclick="addPoint()">
</td>
<td><input type="Button" value=" = " onclick="count()">
</td>
<td><input type="Button" value=" / " onclick="setOper('/')">
</td>

</tr>
<tr align="center">
<td><input type="Button" value="sqrt" onclick="useFunc('sqrt')">
</td>
<td><input type="Button" value="1/x " onclick="useFunc('1/x')">
</td>
<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 type="Button" value=" 清除 " onclick="cleartext()">
</td>
</tr>
</table>
</form>
</body>
</html>

silentwins 2006-09-09

打赏
举报

<html>
<head>
<title>提示框</title>
<script language="javascript">
function a()
{
alert("aaaaaaaa");
}
</script>
</head>
<body onload=a()></body>
</html>