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锁定老帖子 主题：很强悍的在线科学计算器
精华帖 (1) :: 良好帖 (0) :: 新手帖 (0) :: 隐藏帖 (11)
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发表时间：2011-03-10
最后修改：2011-03-13
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD><TITLE>计算器,在线网页计算器</TITLE> <META http-equiv=Content-Type content="text/html; charset=gb2312"> <META content=计算器,在线网页计算器 name=description> <META content=计算器,在线网页计算器 name=keywords> <META http-equiv=expires content=0> <META http-equiv=Pragma content=no-cache> <META http-equiv=refresh content=500><BASE onmouseover="window.status='计算器 | QQ：7031633';return true"> <SCRIPT type=text/javascript> var TwoLevel_nCnt = 100; function TwoLevel_IESetup() { var aTmp2, i, j, oLI, oTmp; var aTmp = xGetElementsByClassName("twolevel", document, "ul"); if (aTmp.length) { for (i=0;i<aTmp.length;i++) { aTmp2 = aTmp[i].getElementsByTagName("li"); for (j=0;j<aTmp2.length;j++) { oLI = aTmp2[j]; if (oTmp = oLI.getElementsByTagName("ul")) { oLI.UL = oTmp[0]; oLI.onmouseenter = function() { this.className += " twolevelhover"; }; oLI.onmouseleave = function() { this.className = this.className.replace(/twolevelhover/,""); }; } } } } else if (TwoLevel_nCnt < 2000) { setTimeout("TwoLevel_IESetup()", TwoLevel_nCnt); TwoLevel_nCnt *= 2.5; TwoLevel_nCnt = parseInt(TwoLevel_nCnt, 10); } } var TwoLevel_proto = "javascript:void(0)"; if (location.protocol == "https:") TwoLevel_proto = "src=//0"; document.write("<scr"+"ipt id=__ie_onload defer " + TwoLevel_proto + "><\/scr"+"ipt>"); var TwoLevel_script = document.getElementById("__ie_onload"); TwoLevel_script.onreadystatechange = function() { if (this.readyState == "complete") { TwoLevel_IESetup(); } }; function xGetElementsByClassName(clsName, parentEle, tagName) { var elements = null; var found = new Array(); var re = new RegExp('\\b'+clsName+'\\b'); if (!parentEle) parentEle = document; if (!tagName) tagName = '*'; if (parentEle.getElementsByTagName) {elements = parentEle.getElementsByTagName(tagName);} else if (document.all) {elements = document.all.tags(tagName);} if (elements) { for (var i = 0; i < elements.length; ++i) { if (elements[i].className.search(re) != -1) { found[found.length] = elements[i]; } } } return found; } </SCRIPT>
<SCRIPT id=__ie_onload defer javascript:void(0)></SCRIPT>
<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="x2 " document.calc.cube.value="x3 "
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(leftright,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
//--> </SCRIPT> <BR>
<FORM name=calc> <TABLE class=tb cellSpacing=1 borderColorDark=#ffffff cellPadding=6 width=700 align=center bgColor=#666666 border=0> <TBODY> <TR bgColor=#e4e4e4> <TD align=middle height=24><B><FONT color=#0000ff size=4>在线科学计算器</FONT></B></TD></TR> <TR> <TD align=middle bgColor=#f6f6f6 height=40></TD></TR> <TR bgColor=#ffffff> <TD align=middle height=40> <TABLE cellSpacing=0 cellPadding=0 width="75%" align=center border=0> <TBODY> <TR align=middle> <TD> </TD></TR></TBODY></TABLE> <TABLE class=tb height=40 cellSpacing=0 cellPadding=0 width=500 border=0> <TBODY> <TR> <TD align=middle width=500><INPUT readOnly size=67 value=0 name=display> </TD></TR></TBODY></TABLE></TD></TR> <TR> <TD align=middle bgColor=#e3f9ff> <TABLE class=tb width=100%> <TBODY> <TR> <TD width=320><INPUT onclick=inputChangCarry(16) type=radio name=carry> 十六进制 <INPUT onclick=inputChangCarry(10) type=radio CHECKED name=carry> 十进制 <INPUT onclick=inputChangCarry(8) type=radio name=carry> 八进制 <INPUT onclick=inputChangCarry(2) type=radio name=carry> 二进制 </TD> <TD width=30></TD> <TD width=150><INPUT onclick="inputChangAngle('d')" type=radio CHECKED value=d name=angle> 角度制 <INPUT onclick="inputChangAngle('r')" type=radio value=r name=angle> 弧度制 </TD></TR></TBODY></TABLE> <TABLE class=tb width=500> <TBODY> <TR> <TD width=175><INPUT onclick=inputshift() type=checkbox value=ON name=shiftf> 上档功能 <INPUT onclick=inputshift() type=checkbox value=ON name=hypf> 双曲函数 </TD> <TD><INPUT style="BACKGROUND-COLOR: lightgrey" readOnly size=3 name=bracket> <INPUT style="BACKGROUND-COLOR: lightgrey" readOnly size=3 name=memory> <INPUT style="BACKGROUND-COLOR: lightgrey" readOnly size=3 name=operator> </TD> <TD width=183><INPUT style="COLOR: red" onclick=backspace() type=button value=" 退格 "> <INPUT style="COLOR: red" onclick="document.calc.display.value = 0 " type=button value=" 清屏 "> <INPUT style="COLOR: red" onclick=clearall() type=button value=" 全清"> </TD></TR></TBODY></TABLE> <TABLE class=tb width=500> <TBODY> <TR> <TD> <TABLE class=tb> <TBODY> <TR align=middle> <TD><INPUT style="COLOR: blue" onclick="inputfunction('pi','pi')" type=button value=" PI " name=pi> </TD> <TD><INPUT style="COLOR: blue" onclick="inputfunction('e','e')" type=button value=" E " name=e> </TD> <TD><INPUT style="COLOR: #ff00ff" onclick="inputfunction('dms','deg')" type=button value=d.ms name=bt> </TD></TR> <TR align=middle> <TD><INPUT style="COLOR: #ff00ff" onclick=addbracket() type=button value=" ( "> </TD> <TD><INPUT style="COLOR: #ff00ff" onclick=disbracket() type=button value=" ) "> </TD> <TD><INPUT style="COLOR: #ff00ff" onclick="inputfunction('ln','exp')" type=button value=" ln " name=ln> </TD></TR> <TR align=middle> <TD><INPUT style="COLOR: #ff00ff" onclick="inputtrig('sin','arcsin','hypsin','ahypsin')" type=button value="sin " name=sin> </TD> <TD><INPUT style="COLOR: #ff00ff" onclick="operation('',7)" type=button value="xy "> </TD> <TD><INPUT style="COLOR: #ff00ff" onclick="inputfunction('log','expdec')" type=button value="log " name=log> </TD></TR> <TR align=middle> <TD><INPUT style="COLOR: #ff00ff" onclick="inputtrig('cos','arccos','hypcos','ahypcos')" type=button value="cos " name=cos> </TD> <TD><INPUT style="COLOR: #ff00ff" onclick="inputfunction('cube','cubt')" type=button value="x3 " name=cube> </TD> <TD><INPUT style="COLOR: #ff00ff" onclick="inputfunction('!','!')" type=button value=" n! "> </TD></TR> <TR align=middle> <TD><INPUT style="COLOR: #ff00ff" onclick="inputtrig('tan','arctan','hyptan','ahyptan')" type=button value="tan " name=tan> </TD> <TD><INPUT style="COLOR: #ff00ff" onclick="inputfunction('sqr','sqrt')" type=button value="x2 " name=sqr> </TD> <TD><INPUT style="COLOR: #ff00ff" onclick="inputfunction('recip','recip')" type=button value="1/x "> </TD></TR></TBODY></TABLE></TD> <TD width=30></TD> <TD> <TABLE> <TBODY> <TR> <TD><INPUT style="COLOR: red" onclick=putmemory() type=button value=" 储存 "> </TD></TR> <TR> <TD><INPUT style="COLOR: red" onclick=getmemory() type=button value=" 取存 "> </TD></TR> <TR> <TD><INPUT style="COLOR: red" onclick=addmemory() type=button value=" 累存 "> </TD></TR> <TR> <TD><INPUT style="COLOR: red" onclick=multimemory() type=button value=" 积存 "> </TD></TR> <TR> <TD height=33><INPUT style="COLOR: red" onclick=clearmemory() type=button value=" 清存 "> </TD></TR></TBODY></TABLE></TD> <TD width=30></TD> <TD> <TABLE> <TBODY> <TR align=middle> <TD><INPUT style="COLOR: blue" onclick="inputkey('7')" type=button value=" 7 " name=k7> </TD> <TD><INPUT style="COLOR: blue" onclick="inputkey('8')" type=button value=" 8 " name=k8> </TD> <TD><INPUT style="COLOR: blue" onclick="inputkey('9')" type=button value=" 9 " name=k9> </TD> <TD><INPUT style="COLOR: red" onclick="operation('/',6)" type=button value=" / "> </TD> <TD><INPUT style="COLOR: red" onclick="operation('%',6)" type=button value=取余> </TD> <TD><INPUT style="COLOR: red" onclick="operation('&',3)" type=button value=" 与 "> </TD></TR> <TR align=middle> <TD><INPUT style="COLOR: blue" onclick="inputkey('4')" type=button value=" 4 " name=k4> </TD> <TD><INPUT style="COLOR: blue" onclick="inputkey('5')" type=button value=" 5 " name=k5> </TD> <TD><INPUT style="COLOR: blue" onclick="inputkey('6')" type=button value=" 6 " name=k6> </TD> <TD><INPUT style="COLOR: red" onclick="operation('*',6)" type=button value=" * "> </TD> <TD><INPUT style="COLOR: red" onclick="inputfunction('floor','deci')" type=button value=取整 name=floor> </TD> <TD><INPUT style="COLOR: red" onclick="operation('|',1)" type=button value=" 或 "> </TD></TR> <TR align=middle> <TD><INPUT style="COLOR: blue" onclick="inputkey('1')" type=button value=" 1 "> </TD> <TD><INPUT style="COLOR: blue" onclick="inputkey('2')" type=button value=" 2 " name=k2> </TD> <TD><INPUT style="COLOR: blue" onclick="inputkey('3')" type=button value=" 3 " name=k3> </TD> <TD><INPUT style="COLOR: red" onclick="operation('-',5)" type=button value=" - "> </TD> <TD><INPUT style="COLOR: red" onclick="operation('<',4)" type=button value=左移> </TD> <TD><INPUT style="COLOR: red" onclick="inputfunction('~','~')" type=button value=" 非 "> </TD></TR> <TR align=middle> <TD><INPUT style="COLOR: blue" onclick="inputkey('0')" type=button value=" 0 "> </TD> <TD><INPUT style="COLOR: blue" onclick=changeSign() type=button value=+/-> </TD> <TD><INPUT style="COLOR: blue" onclick="inputkey('.')" type=button value=" . " name=kp> </TD> <TD><INPUT style="COLOR: red" onclick="operation('+',5)" type=button value=" + "> </TD> <TD><INPUT style="COLOR: red" onclick=result() type=button value=" ＝ "> </TD> <TD><INPUT style="COLOR: red" onclick="operation('x',2)" type=button value=异或> </TD></TR> <TR align=middle> <TD><INPUT style="COLOR: blue" disabled onclick="inputkey('a')" type=button value=" A " name=ka> </TD> <TD><INPUT style="COLOR: blue" disabled onclick="inputkey('b')" type=button value=" B " name=kb> </TD> <TD><INPUT style="COLOR: blue" disabled onclick="inputkey('c')" type=button value=" C " name=kc> </TD> <TD><INPUT style="COLOR: blue" disabled onclick="inputkey('d')" type=button value=" D " name=kd> </TD> <TD><INPUT style="COLOR: blue" disabled onclick="inputkey('e')" type=button value=" E" name=ke> </TD> <TD><INPUT style="COLOR: blue" disabled onclick="inputkey('f')" type=button value=" F" name=kf> </TD></TR></TBODY></TABLE></TD></TR></TBODY></TABLE></TD></TR></TBODY></TABLE></FORM><BR> 声明：ITeye文章版权属于作者，受法律保护。没有作者书面许可不得转载。
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发表时间：2011-03-11
RSS阅读要滚动半天, 贴出来恶心人嘛
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发表时间：2011-03-13
太长了吧，最好给个demo页面
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发表时间：2011-03-13
demo已经上传，相互学习
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发表时间：2011-03-14
jerryzxm 写道 RSS阅读要滚动半天, 贴出来恶心人嘛
确实够长的.让人没兴趣细看. |
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发表时间：2011-03-14
在论坛里发代码，是给人看的，排版很重要。。
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发表时间：2011-03-14
哎，系统的计算器不是很好使嘛，写这个有什么用处啊
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发表时间：2011-03-14
大约 在2年前我就在网上看见过了,我这个比你的样式还要好看 其他的都差不多了
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发表时间：2011-03-14
0.7/0.2=3.4999999999999995
JS的运算误差问题没有解决 |
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发表时间：2011-03-14
一看就知道发帖不是很专业，，
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