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    网页计算器代码,功能全的计数器

    时间:2014-06-11 17:55 来源:互联网 作者:源码搜藏 浏览:收藏 挑错 推荐 打印

    运行代码保存代码复制代码 提示:您可以先修改部分代码再运行,保存代码功能在Firefox下无效。
    • 一个功能超全的网页JS计算器特效,除了基本的四则运算外,这个计算器还具备进制转的的功能,还支持上档、下档、双曲函数,按角度制、弧度制计算相关公式,平方根、余弦、正弦计算,取余、取整、与或非运算,储存,取存等,核心代码由JavaScript实现。
    • <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
       
      //-->
        </SCRIPT>
    网页计算器代码,功能全的计数器由源码搜藏网整理,转载请注明出处http://www.codesocang.com/texiao/jisuanzhuanhuan/9093.html
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