科学计算器代码,JS代码库,德仔网

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代码分类
【JS】科学计算器
作者:rock870210 / 发布于2014/6/26/ 729

	<html>

	<head>
	<meta http-equiv="Content-Type" content="text/html; charset=GBK">
	<title>科学计算器</title>
	<style>
	<!--
	BODY {
	font-family: "宋体", "Arial", "Times New Roman";
	font-size: 9pt;
	background-color: #edf0e1;
	color: #0001fC;
	background-attachment: fixed;
	}
	td{font-family: "宋体", "Arial Narrow", "Times New Roman"; font-size:9pt; font-color:#000000}
	//-->

	</style>
	<script language="javascript">
	<!--
	var endNumber=true
	var mem=0
	var carry=10
	var hexnum="0123456789abcdef"
	var angle="d"
	var stack=""
	var level="0"
	var layer=0

	
	//数字键

	function inputkey(key)
	{
	var index=key.charCodeAt(0);
	if ((carry==2 && (index==48 || index==49))
	 || (carry==8 && index>=48 && index<=55)
	 || (carry==10 && (index>=48 && index<=57 || index==46))
	 || (carry==16 && ((index>=48 && index<=57) || (index>=97 && index<=102))))
	if(endNumber)
	{
	 endNumber=false
	 document.calc.display.value = key
	}
	else if(document.calc.display.value == null || document.calc.display.value == "0")
	 document.calc.display.value = key
	else
	 document.calc.display.value += key
	}

	function changeSign()
	{
	 if (document.calc.display.value!="0")
	 if(document.calc.display.value.substr(0,1) == "-")
	 document.calc.display.value = document.calc.display.value.substr(1)
	 else
	 document.calc.display.value = "-" + document.calc.display.value
	}

	//函数键

	function inputfunction(fun,shiftfun)
	{
	endNumber=true
	if (document.calc.shiftf.checked)
	 document.calc.display.value=decto(funcalc(shiftfun,(todec(document.calc.display.value,carry))),carry)
	else
	 document.calc.display.value=decto(funcalc(fun,(todec(document.calc.display.value,carry))),carry)
	document.calc.shiftf.checked=false
	document.calc.hypf.checked=false
	inputshift()
	}

	function inputtrig(trig,arctrig,hyp,archyp)
	{
	if (document.calc.hypf.checked)
	 inputfunction(hyp,archyp)
	else
	 inputfunction(trig,arctrig)
	}

	//运算符

	function operation(join,newlevel)
	{
	endNumber=true
	var temp=stack.substr(stack.lastIndexOf("(")+1)+document.calc.display.value
	while (newlevel!=0 && (newlevel<=(level.charAt(level.length-1))))
	{
	 temp=parse(temp)
	 level=level.slice(0,-1)
	}
	if (temp.match(/^(.*\d[\+\-\*\/\%\^\&\|x])?([+-]?[0-9a-f\.]+)$/))
	 document.calc.display.value=RegExp.$2
	stack=stack.substr(0,stack.lastIndexOf("(")+1)+temp+join
	document.calc.operator.value=" "+join+" "
	level=level+newlevel
	
	}

	//括号

	function addbracket()
	{
	endNumber=true
	document.calc.display.value=0
	stack=stack+"("
	document.calc.operator.value=" "
	level=level+0
	
	layer+=1
	document.calc.bracket.value="(="+layer
	}

	function disbracket()
	{
	endNumber=true
	var temp=stack.substr(stack.lastIndexOf("(")+1)+document.calc.display.value
	while ((level.charAt(level.length-1))>0)
	{
	 temp=parse(temp)
	 level=level.slice(0,-1)
	}
	
	document.calc.display.value=temp
	stack=stack.substr(0,stack.lastIndexOf("("))
	document.calc.operator.value=" "
	level=level.slice(0,-1)

	layer-=1
	if (layer>0)
	 document.calc.bracket.value="(="+layer
	else
	 document.calc.bracket.value=""
	}

	//等号

	function result()
	{
	endNumber=true
	while (layer>0)
	 disbracket()
	var temp=stack+document.calc.display.value
	while ((level.charAt(level.length-1))>0)
	{
	 temp=parse(temp)
	 level=level.slice(0,-1)
	}

	document.calc.display.value=temp
	document.calc.bracket.value=""
	document.calc.operator.value=""
	stack=""
	level="0"
	}

	
	//修改键

	function backspace()
	{
	if (!endNumber)
	{
	 if(document.calc.display.value.length>1)
	 document.calc.display.value=document.calc.display.value.substring(0,document.calc.display.value.length - 1)
	 else
	 document.calc.display.value=0
	}
	}

	function clearall()
	{
	document.calc.display.value=0
	endNumber=true
	stack=""
	level="0"
	layer=""
	document.calc.operator.value=""
	document.calc.bracket.value=""
	}

	
	//转换键

	function inputChangCarry(newcarry)
	{
	endNumber=true
	document.calc.display.value=(decto(todec(document.calc.display.value,carry),newcarry))
	carry=newcarry

	document.calc.sin.disabled=(carry!=10)
	document.calc.cos.disabled=(carry!=10)
	document.calc.tan.disabled=(carry!=10)
	document.calc.bt.disabled=(carry!=10)
	document.calc.pi.disabled=(carry!=10)
	document.calc.e.disabled=(carry!=10)
	document.calc.kp.disabled=(carry!=10)
	
	document.calc.k2.disabled=(carry<=2)
	document.calc.k3.disabled=(carry<=2)
	document.calc.k4.disabled=(carry<=2)
	document.calc.k5.disabled=(carry<=2)
	document.calc.k6.disabled=(carry<=2)
	document.calc.k7.disabled=(carry<=2)
	document.calc.k8.disabled=(carry<=8)
	document.calc.k9.disabled=(carry<=8)
	document.calc.ka.disabled=(carry<=10)
	document.calc.kb.disabled=(carry<=10)
	document.calc.kc.disabled=(carry<=10)
	document.calc.kd.disabled=(carry<=10)
	document.calc.ke.disabled=(carry<=10)
	document.calc.kf.disabled=(carry<=10)

	
	
	}

	function inputChangAngle(angletype)
	{
	endNumber=true
	angle=angletype
	if (angle=="d")
	 document.calc.display.value=radiansToDegress(document.calc.display.value)
	else
	 document.calc.display.value=degressToRadians(document.calc.display.value)
	endNumber=true
	}

	function inputshift()
	{
	if (document.calc.shiftf.checked)
	{
	 document.calc.bt.value="deg "
	 document.calc.ln.value="exp "
	 document.calc.log.value="expd"
	
	 if (document.calc.hypf.checked)
	 {
	 document.calc.sin.value="ahs "
	 document.calc.cos.value="ahc "
	 document.calc.tan.value="aht "
	 }
	 else
	 {
	 document.calc.sin.value="asin"
	 document.calc.cos.value="acos"
	 document.calc.tan.value="atan"
	 }
	
	 document.calc.sqr.value="x^.5"
	 document.calc.cube.value="x^.3"
	
	 document.calc.floor.value="小数"
	}
	else
	{
	 document.calc.bt.value="d.ms"
	 document.calc.ln.value=" ln "
	 document.calc.log.value="log "

	 if (document.calc.hypf.checked)
	 {
	 document.calc.sin.value="hsin"
	 document.calc.cos.value="hcos"
	 document.calc.tan.value="htan"
	 }
	 else
	 {
	 document.calc.sin.value="sin "
	 document.calc.cos.value="cos "
	 document.calc.tan.value="tan "
	 }
	
	 document.calc.sqr.value="x^2 "
	 document.calc.cube.value="x^3 "
	
	 document.calc.floor.value="取整"
	}

	}
	//存储器部分

	function clearmemory()
	{
	mem=0
	document.calc.memory.value=" "
	}

	function getmemory()
	{
	endNumber=true
	document.calc.display.value=decto(mem,carry)
	}

	function putmemory()
	{
	endNumber=true
	if (document.calc.display.value!=0)
	{
	 mem=todec(document.calc.display.value,carry)
	 document.calc.memory.value=" M "
	}
	else
	 document.calc.memory.value=" "
	}

	function addmemory()
	{
	endNumber=true
	mem=parseFloat(mem)+parseFloat(todec(document.calc.display.value,carry))
	if (mem==0)
	 document.calc.memory.value=" "
	else
	 document.calc.memory.value=" M "
	}

	function multimemory()
	{
	endNumber=true
	mem=parseFloat(mem)*parseFloat(todec(document.calc.display.value,carry))
	if (mem==0)
	 document.calc.memory.value=" "
	else
	 document.calc.memory.value=" M "
	}

	//十进制转换

	function todec(num,oldcarry)
	{
	if (oldcarry==10 || num==0) return(num)
	var neg=(num.charAt(0)=="-")
	if (neg) num=num.substr(1)
	var newnum=0
	for (var index=1;index<=num.length;index++)
	 newnum=newnum*oldcarry+hexnum.indexOf(num.charAt(index-1))
	if (neg)
	 newnum=-newnum
	return(newnum)
	}

	function decto(num,newcarry)
	{
	var neg=(num<0)
	if (newcarry==10 || num==0) return(num)
	num=""+Math.abs(num)
	var newnum=""
	while (num!=0)
	{
	 newnum=hexnum.charAt(num%newcarry)+newnum
	 num=Math.floor(num/newcarry)
	}
	if (neg)
	 newnum="-"+newnum
	return(newnum)
	}

	//表达式解析

	function parse(string)
	{
	if (string.match(/^(.*\d[\+\-\*\/\%\^\&\|x\<])?([+-]?[0-9a-f\.]+)([\+\-\*\/\%\^\&\|x\<])([+-]?[0-9a-f\.]+)$/))
	 return(RegExp.$1+cypher(RegExp.$2,RegExp.$3,RegExp.$4))
	else
	 return(string)
	}

	//数学运算和位运算

	function cypher(left,join,right)
	{
	left=todec(left,carry)
	right=todec(right,carry)
	if (join=="+")
	 return(decto(parseFloat(left)+parseFloat(right),carry))
	if (join=="-")
	 return(decto(left-right,carry))
	if (join=="*")
	 return(decto(left*right,carry))
	if (join=="/" && right!=0)
	 return(decto(left/right,carry))
	if (join=="%")
	 return(decto(left%right,carry))
	if (join=="&")
	 return(decto(left&right,carry))
	if (join=="|")
	 return(decto(left|right,carry))
	if (join=="^")
	 return(decto(Math.pow(left,right),carry))
	if (join=="x")
	 return(decto(left^right,carry))
	if (join=="<")
	 return(decto(left<<right,carry))
	alert("除数不能为零")
	return(left)
	}

	//函数计算

	function funcalc(fun,num)
	{
	with(Math)
	{
	 if (fun=="pi")
	 return(PI)
	 if (fun=="e")
	 return(E)

	 if (fun=="abs")
	 return(abs(num))
	 if (fun=="ceil")
	 return(ceil(num))
	 if (fun=="round")
	 return(round(num))

	 if (fun=="floor")
	 return(floor(num))
	 if (fun=="deci")
	 return(num-floor(num))

	
	 if (fun=="ln" && num>0)
	 return(log(num))
	 if (fun=="exp")
	 return(exp(num))
	 if (fun=="log" && num>0)
	 return(log(num)*LOG10E)
	 if (fun=="expdec")
	 return(pow(10,num))

	
	 if (fun=="cube")
	 return(num*num*num)
	 if (fun=="cubt")
	 return(pow(num,1/3))
	 if (fun=="sqr")
	 return(num*num)
	 if (fun=="sqrt" && num>=0)
	 return(sqrt(num))

	 if (fun=="!")
	 return(factorial(num))

	 if (fun=="recip" && num!=0)
	 return(1/num)
	
	 if (fun=="dms")
	 return(dms(num))
	 if (fun=="deg")
	 return(deg(num))

	 if (fun=="~")
	 return(~num)
	
	 if (angle=="d")
	 {
	 if (fun=="sin")
	 return(sin(degressToRadians(num)))
	 if (fun=="cos")
	 return(cos(degressToRadians(num)))
	 if (fun=="tan")
	 return(tan(degressToRadians(num)))

	 if (fun=="arcsin" && abs(num)<=1)
	 return(radiansToDegress(asin(num)))
	 if (fun=="arccos" && abs(num)<=1)
	 return(radiansToDegress(acos(num)))
	 if (fun=="arctan")
	 return(radiansToDegress(atan(num)))
	 }
	 else
	 {
	 if (fun=="sin")
	 return(sin(num))
	 if (fun=="cos")
	 return(cos(num))
	 if (fun=="tan")
	 return(tan(num))

	 if (fun=="arcsin" && abs(num)<=1)
	 return(asin(num))
	 if (fun=="arccos" && abs(num)<=1)
	 return(acos(num))
	 if (fun=="arctan")
	 return(atan(num))
	 }
	
	 if (fun=="hypsin")
	 return((exp(num)-exp(0-num))*0.5)
	 if (fun=="hypcos")
	 return((exp(num)+exp(-num))*0.5)
	 if (fun=="hyptan")
	 return((exp(num)-exp(-num))/(exp(num)+exp(-num)))

	 if (fun=="ahypsin" | fun=="hypcos" | fun=="hyptan")
	 {
	 alert("对不起,公式还没有查到!")
	 return(num)
	 }
	
	 alert("超出函数定义范围")
	 return(num)
	}
	}

	function factorial(n)
	{
	n=Math.abs(parseInt(n))
	var fac=1
	for (;n>0;n-=1)
	 fac*=n
	return(fac)
	}

	function dms(n)
	{
	var neg=(n<0)
	with(Math)
	{
	 n=abs(n)
	 var d=floor(n)
	 var m=floor(60*(n-d))
	 var s=(n-d)*60-m
	}
	var dms=d+m/100+s*0.006
	if (neg)
	 dms=-dms
	return(dms)
	}

	function deg(n)
	{
	var neg=(n<0)
	with(Math)
	{
	 n=abs(n)
	 var d=floor(n)
	 var m=floor((n-d)*100)
	 var s=(n-d)*100-m
	}
	var deg=d+m/60+s/36
	if (neg)
	 deg=-deg
	return(deg)
	}

	function degressToRadians(degress)
	{
	return(degress*Math.PI/180)
	}

	function radiansToDegress(radians)
	{
	return(radians*180/Math.PI)
	}

	//界面
	function init(){
	//top.initYYOA(self,"常用工具－计算器");
	}

	//-->
	</script>
	</head>
	<!--written by GoldHuman li hai-->
	<!--2000.8-->
	<body onload="init()" onkeydown=return(!(event.keyCode==78&&event.ctrlKey)) oncontextmenu="return false">
	<div align="center">
	<form name=calc>
	<table border="1" width="500" height="250">
	<tr>
	<td height=50>
	<table width=500>
	 <td>&nbsp; </td>
	<td>
	<div align=center>
	<input type=text name="display" value="0" readonly size="40">
	</div>
	</td>
	</table>
	</td>
	</tr>
	<tr>
	<td>
	<table width=500>
	<tr>
	<td width=290>
	 <input type=radio name="carry" onClick="inputChangCarry(16)">
	 十六进制
	 <input type=radio name="carry" checked onClick="inputChangCarry(10)">
	 十进制
	 <input type=radio name="carry" onClick="inputChangCarry(8)">
	 八进制
	 <input type=radio name="carry" onClick="inputChangCarry(2)">
	 二进制
	</td>
	<td>
	</td>
	<td width=135>
	 <input type=radio name="angle" value="d" onClick="inputChangAngle('d')" checked>
	 角度制
	 <input type=radio name="angle" value="r" onClick="inputChangAngle('r')">
	 弧度制
	</td>
	</tr>
	</table>
	<table width=500>
	<tr>
	<td width=170>
	<input name="shiftf" type="checkbox" onclick="inputshift()">上档功能
	<input name="hypf" type="checkbox" onclick="inputshift()">双曲函数
	</td>
	<td>
	<input name="bracket" value="" type=text size=3 readonly style="background-color=lightgrey">
	<input name="memory" value="" type=text size=3 readonly style="background-color=lightgrey">
	<input name="operator" value="" type=text size=3 readonly style="background-color=lightgrey">
	</td>
	<td width=183>
	 <input type="button" value=" 退格 "
	 onclick="backspace()" style="color=red">
	 <input type="button" value=" 清屏 "
	 onClick="document.calc.display.value = 0 " style="color=red">
	 <input type="button" value=" 全清"
	 onClick="clearall()" style="color=red">
	</td>
	</tr>
	</table>

	<table width=500>
	<tr>
	<td>
	<table>
	<tr align=center>
	<td>
	<input name=pi type="button" value=" PI "
	 onClick="inputfunction('pi','pi')" style="color=blue">
	</td>

	<td>
	<input name=e type="button" value=" E "
	 onClick="inputfunction('e','e')" style="color=blue">
	</td>

	<td>
	<input name=bt type="button" value="d.ms"
	onClick="inputfunction('dms','deg')" style="color=#ff00ff">
	</td>
	</tr>
	<tr align=center>
	<td>
	<input type="button" value=" ( "
	 onClick="addbracket()" style="color=#ff00ff">
	</td>

	<td>
	<input type="button" value=" ) "
	 onClick="disbracket()" style="color=#ff00ff">
	</td>

	<td>
	<input name=ln type="button" value=" ln "
	 onClick="inputfunction('ln','exp')" style="color=#ff00ff">
	</td>
	</tr>
	<tr align=center>
	<td>
	<input name=sin type="button" value="sin "
	 onClick="inputtrig('sin','arcsin','hypsin','ahypsin')" style="color=#ff00ff">
	</td>

	<td>
	<input type="button" value="x^y "
	 onClick="operation('^',7)" style="color=#ff00ff">
	</td>

	<td>
	<input name=log type="button" value="log "
	 onClick="inputfunction('log','expdec')" style="color=#ff00ff">
	</td>
	</tr>
	<tr align=center>
	<td>
	<input name=cos type="button" value="cos "
	 onClick="inputtrig('cos','arccos','hypcos','ahypcos')" style="color=#ff00ff">
	</td>

	<td>
	<input name=cube type="button" value="x^3 "
	 onClick="inputfunction('cube','cubt')" style="color=#ff00ff">
	</td>

	<td>
	<input type="button" value=" n! "
	 onClick="inputfunction('!','!')" style="color=#ff00ff">
	</td>
	</tr>
	<tr align=center>
	<td>
	<input name=tan type="button" value="tan "
	 onClick="inputtrig('tan','arctan','hyptan','ahyptan')" style="color=#ff00ff">
	</td>

	<td>
	<input name=sqr type="button" value="x^2 "
	 onClick="inputfunction('sqr','sqrt')" style="color=#ff00ff">
	</td>

	<td>
	<input type="button" value="1/x "
	 onClick="inputfunction('recip','recip')" style="color=#ff00ff">
	</td>
	</tr>
	 </table>
	 </td>
	<td width=30>
	</td>
	 <td>
	 <table>
	<tr>
	<td>
	 <input type="button" value=" 储存 "
	 onClick="putmemory()" style="color=red">
	</td>
	</tr>
	<tr>
	<td>
	 <input type="button" value=" 取存 "
	 onClick="getmemory()" style="color=red">
	</td>
	</tr>
	<tr>
	<td>
	 <input type="button" value=" 累存 "
	 onClick="addmemory()" style="color=red">
	</td>
	</tr>
	<tr>
	<td>
	 <input type="button" value=" 积存 "
	 onClick="multimemory()" style="color=red">
	</td>
	</tr>
	<tr>
	 <td height="33">
	 <input type="button" value=" 清存 "
	 onClick="clearmemory()" style="color=red">
	</td>
	</tr>
	 </table>
	 </td>
	<td width=30>
	</td>
	 <td>
	 <table>
	<tr align=center>
	<td>
	<input name=k7 type="button" value=" 7 "
	 onClick="inputkey('7')" style="color=blue">
	</td>

	<td>
	<input name=k8 type="button" value=" 8 "
	 onClick="inputkey('8')" style="color=blue">
	</td>

	<td>
	<input name=k9 type="button" value=" 9 "
	 onClick="inputkey('9')" style="color=blue">
	</td>

	<td>
	<input type="button" value=" / "
	 onClick="operation('/',6)" style="color=red">
	</td>

	<td>
	<input type="button" value="取余"
	 onClick="operation('%',6)" style="color=red">
	</td>

	<td>
	<input type="button" value=" 与 "
	 onClick="operation('&',3)" style="color=red">
	</td>
	</tr>

	<tr align=center>
	<td>
	<input name=k4 type="button" value=" 4 "
	 onClick="inputkey('4')" style="color=blue">
	</td>

	<td>
	<input name=k5 type="button" value=" 5 "
	 onClick="inputkey('5')" style="color=blue">
	</td>

	<td>
	<input name=k6 type="button" value=" 6 "
	 onClick="inputkey('6')" style="color=blue">
	</td>

	<td>
	<input type="button" value=" * "
	 onClick="operation('*',6)" style="color=red">
	</td>

	<td>
	<input name=floor type="button" value="取整"
	 onClick="inputfunction('floor','deci')" style="color=red">
	</td>

	<td>
	<input type="button" value=" 或 "
	 onClick="operation('|',1)" style="color=red">
	</td>
	</tr>

	<tr align=center>
	<td>
	<input type="button" value=" 1 "
	 onClick="inputkey('1')" style="color=blue">
	</td>

	<td>
	<input name=k2 type="button" value=" 2 "
	 onClick="inputkey('2')" style="color=blue">
	</td>

	<td>
	<input name=k3 type="button" value=" 3 "
	 onClick="inputkey('3')" style="color=blue">
	</td>

	<td>
	<input type="button" value=" - "
	 onClick="operation('-',5)" style="color=red">
	</td>

	<td>
	 <input type="button" value="左移" onClick="operation('&lt',4)" style="color=red">
	</td>

	<td>
	<input type="button" value=" 非 "
	 onClick="inputfunction('~','~')" style="color=red">
	</td>
	</tr>

	<tr align=center>
	<td>
	<input type="button" value=" 0 "
	 onClick="inputkey('0')" style="color=blue">
	</td>

	<td>
	<input type="button" value="+/-"
	 onClick="changeSign()" style="color=blue">
	</td>

	<td>
	<input name=kp type="button" value=" . "
	 onClick="inputkey('.')" style="color=blue">
	</td>

	<td>
	<input type="button" value=" + "
	 onClick="operation('+',5)" style="color=red">
	</td>

	<td>
	<input type="button" value=" ＝ "
	 onClick="result()" style="color=red">
	</td>

	<td>
	<input type="button" value="异或"
	 onClick="operation('x',2)" style="color=red">
	</td>
	</tr>

	<tr align=center>
	<td>
	<input name=ka type="button" value=" A "
	 onClick="inputkey('a')" style="color=blue" disabled=true>
	</td>

	<td>
	<input name=kb type="button" value=" B "
	 onClick="inputkey('b')" style="color=blue" disabled=true>
	</td>

	<td>
	<input name=kc type="button" value=" C "
	 onClick="inputkey('c')" style="color=blue" disabled=true>
	</td>

	<td>
	<input name=kd type="button" value=" D "
	 onClick="inputkey('d')" style="color=blue" disabled=true>
	</td>

	<td>
	<input name=ke type="button" value=" E"
	 onClick="inputkey('e')" style="color=blue" disabled=true>
	</td>

	<td>
	<input name=kf type="button" value=" F"
	 onClick="inputkey('f')" style="color=blue" disabled=true>
	</td>
	</tr>
	</table>
	</td>
	</tr>
	</table>
	</td>
	</tr>
	</table>
	</form>
	</div>
	</body>
	</html>
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