度衡量换算 -- 长度换算

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度衡量换算 -- 长度换算

作者:度衡量换算 -- 长度换算发布时间:2007-11-22 0:00:46 发布人: admin

<html>

<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>jz123.cn，度衡量换算--长度换算</title>
<script language="JScript" type="text/JScript">
function LENGTH_MEASURES() {
  this.mKilometer = 1000
  this.mMeter = 1
  this.mDecimeter = 0.1
  this.mCentimeter = 0.01
  this.mMillimeter = 0.001
  this.mMicronmeter = 0.000001
  this.mLimeter = 500
  this.mZhangmeter = 10 / 3
  this.mChimeter = 1 / 3
  this.mCunmeter = 1 / 30
  this.mFenmeter = 1 / 300
  this.mmLimeter = 1 / 3000
  this.engFoot = 0.3048
  this.engMile = 5280 * this.engFoot
  this.engFurlong = 660 * this.engFoot
  this.engYard = 3 * this.engFoot
  this.engInch = this.engFoot / 12
  this.nautMile = 1852
  this.nautFathom = 6 * this.engFoot
}
var length_data = new LENGTH_MEASURES();

function checkNum(str) {
  for (var i=0; i<str.length; i++)
  {
    var ch = str.substring(i, i + 1)
    if (ch!="."  &&  ch!="+"  &&  ch!="-"  &&  ch!="e"  &&  ch!="E"  &&  (ch < "0" || ch > "9"))
    {
      alert("请输入有效的数字");
      return false;
    }
  }
  return true
}

function normalize(what,digits) {
  var str=""+what;
  var pp=Math.max(str.lastIndexOf("+"),str.lastIndexOf("-"));
  var idot=str.indexOf(".");
  if (idot>=1)
  {
    var ee=(pp>0)?str.substring(pp-1,str.length):"";
    digits+=idot;
    if (digits>=str.length)
      return str;
    if (pp>0  &&  digits>=pp)
      digits-=pp;
    var c=eval(str.charAt(digits));
    var ipos=digits-1;
    if (c>=5)
    {
      while (str.charAt(ipos)=="9")
        ipos--;
      if (str.charAt(ipos)==".")
      {
        var nc=eval(str.substring(0,idot))+1;
        if (nc==10  &&  ee.length>0)
        {
          nc=1;
          ee="e"+(eval(ee.substring(1,ee.length))+1);
        }
        return ""+nc+ee;
      }
      return str.substring(0,ipos)+(eval(str.charAt(ipos))+1)+ee;
    }
    else
      var ret=str.substring(0,digits)+ee;
    for (var i=0; i<ret.length; i++)
        if (ret.charAt(i)>"0"  &&  ret.charAt(i)<="9")
          return ret;
    return str;
  }
  return str;
}

function compute(obj,val,data) {
  if (obj[val].value)
  {
    var uval=0;
    uval = obj[val].value*data[val];
    if( (uval >= 0)  &&  (obj[val].value.indexOf("-") != -1) )
    {
      uval = -uval;    
    }
    for (var i in data)
      obj[i].value=normalize(uval/data[i],8);
  }
}

function resetValues(form,data) {   
    for (var i in data)
      form[i].value="";
}

function resetAll(form) {   
  resetValues(form,length_data);
}

</script>
</head>

<body class="bodycolor" topmargin="2">
<table width="100%" border="0" cellpadding="0" cellspacing="0" class="small">
  <tbody>
    <tr>
      <td align="center" valign="top">
          <form action="">

<table width="75%" border="0" cellspacing="0" cellpadding="0" class="small">
              <tr>
                <td>　　可实现公里(km)、米(m)、分米(dm)、厘米(cm)、里、丈、尺、寸、分、厘、海里(nmi)、英寻、英里、弗隆(fur)、码(yd)、英尺(ft)、英寸(in)、毫米(mm)、微米(um)间的互转互换。</td>
              </tr>
            </table>

<table cellspacing="0" cellpadding="4" width="75%" class="small">
              <tbody>
                <tr>
                  <td nowrap align="right">公里(km)</td>
                  <td align="left"><input size="15" name="mKilometer" class="SmallInput"></td>
                  <td align="left"><input onclick="if (checkNum(mKilometer.value)) compute(this.form,mKilometer.name,length_data)" type="button" value="换算" class="SmallButton" name="mKilometer_bt"></td>
                  <td nowrap align="right">米(m)</td>
                  <td align="left"><input size="15" name="mMeter" class="SmallInput"></td>
                  <td align="left"><input onclick="if (checkNum(mMeter.value)) compute(this.form,mMeter.name,length_data)" type="button" value="换算" class="SmallButton" name="mMeter_bt"></td>
                </tr>
                <tr>
                  <td nowrap align="right">分米(dm)</td>
                  <td align="left"><input size="15" name="mDecimeter" class="SmallInput"></td>
                  <td align="left"><input onclick="if (checkNum(mDecimeter.value)) compute(this.form,mDecimeter.name,length_data)" type="button" value="换算" class="SmallButton" name="mDecimeter_bt"></td>
                  <td nowrap align="right">厘米(cm)</td>
                  <td align="left"><input size="15" name="mCentimeter" class="SmallInput"></td>
                  <td align="left"><input onclick="if (checkNum(mCentimeter.value)) compute(this.form,mCentimeter.name,length_data)" type="button" value="换算" class="SmallButton" name="mCentimeter_bt"></td>
                </tr>
                <tr>
                  <td nowrap align="right">毫米(mm)</td>
                  <td align="left"><input size="15" name="mMillimeter" class="SmallInput"></td>
                  <td align="left"><input onclick="if (checkNum(mMillimeter.value)) compute(this.form,mMillimeter.name,length_data)" type="button" value="换算" class="SmallButton" name="mMillimeter_bt"></td>
                  <td nowrap align="right">微米(um)</td>
                  <td align="left"><input size="15" name="mMicronmeter" class="SmallInput"></td>
                  <td align="left"><input onclick="if (checkNum(mMicronmeter.value)) compute(this.form,mMicronmeter.name,length_data)" type="button" value="换算" class="SmallButton" name="mMicronmeter_bt"></td>
                </tr>
                <tr>
                  <td nowrap align="right">里</td>
                  <td align="left"><input size="15" name="mLimeter" class="SmallInput"></td>
                  <td align="left"><input onclick="if (checkNum(mLimeter.value)) compute(this.form,mLimeter.name,length_data)" type="button" value="换算" class="SmallButton" name="mLimeter_bt"></td>
                  <td nowrap align="right">丈</td>
                  <td align="left"><input size="15" name="mZhangmeter" class="SmallInput"></td>
                  <td align="left"><input onclick="if (checkNum(mZhangmeter.value)) compute(this.form,mZhangmeter.name,length_data)" type="button" value="换算" class="SmallButton" name="mZhangmeter_bt"></td>
                </tr>
                <tr>
                  <td nowrap align="right">尺</td>
                  <td align="left"><input size="15" name="mChimeter" class="SmallInput"></td>
                  <td align="left"><input onclick="if (checkNum(mChimeter.value)) compute(this.form,mChimeter.name,length_data)" type="button" value="换算" class="SmallButton" name="mChimeter_bt"></td>
                  <td nowrap align="right">寸</td>
                  <td align="left"><input size="15" name="mCunmeter" class="SmallInput"></td>
                  <td align="left"><input onclick="if (checkNum(mCunmeter.value)) compute(this.form,mCunmeter.name,length_data)" type="button" value="换算" class="SmallButton" name="mCunmeter_bt"></td>
                </tr>
                <tr>
                  <td nowrap align="right">分</td>
                  <td align="left"><input size="15" name="mFenmeter" class="SmallInput"></td>
                  <td align="left"><input onclick="if (checkNum(mFenmeter.value)) compute(this.form,mFenmeter.name,length_data)" type="button" value="换算" class="SmallButton" name="mFenmeter_bt"></td>
                  <td nowrap align="right">厘</td>
                  <td align="left"><input size="15" name="mmLimeter" class="SmallInput"></td>
                  <td align="left"><input onclick="if (checkNum(mmLimeter.value)) compute(this.form,mmLimeter.name,length_data)" type="button" value="换算" class="SmallButton" name="mmLimeter_bt"></td>
                </tr>
                <tr>
                  <td nowrap align="right">海里(nmi)</td>
                  <td align="left"><input size="15" name="nautMile" class="SmallInput"></td>
                  <td align="left"><input onclick="if (checkNum(nautMile.value)) compute(this.form,nautMile.name,length_data)" type="button" value="换算" class="SmallButton" name="nautMile_bt"></td>
                  <td nowrap align="right">英寻</td>
                  <td align="left"><input size="15" name="nautFathom" class="SmallInput"></td>
                  <td align="left"><input onclick="if (checkNum(nautFathom.value)) compute(this.form,nautFathom.name,length_data)" type="button" value="换算" class="SmallButton" name="nautFathom_bt"></td>
                </tr>
                <tr>
                  <td nowrap align="right">英里(mi)</td>
                  <td align="left"><input size="15" name="engMile" class="SmallInput"></td>
                  <td align="left"><input onclick="if (checkNum(engMile.value)) compute(this.form,engMile.name,length_data)" type="button" value="换算" class="SmallButton" name="engMile_bt"></td>
                  <td nowrap align="right">弗隆(fur)</td>
                  <td align="left"><input size="15" name="engFurlong" class="SmallInput"></td>
                  <td align="left"><input onclick="if (checkNum(engFurlong.value)) compute(this.form,engFurlong.name,length_data)" type="button" value="换算" class="SmallButton" name="engFurlong_bt"></td>
                </tr>
                <tr>
                  <td nowrap align="right">码(yd)</td>
                  <td align="left"><input size="15" name="engYard" class="SmallInput"></td>
                  <td align="left"><input onclick="if (checkNum(engYard.value)) compute(this.form,engYard.name,length_data)" type="button" value="换算" class="SmallButton" name="engYard_bt"></td>
                  <td nowrap align="right">英尺(ft)</td>
                  <td align="left"><input size="15" name="engFoot" class="SmallInput"></td>
                  <td align="left"><input onclick="if (checkNum(engFoot.value)) compute(this.form,engFoot.name,length_data)" type="button" value="换算" class="SmallButton" name="engFoot_bt"></td>
                </tr>
                <tr>
                  <td nowrap align="right">英寸(in)</td>
                  <td align="left"><input size="15" name="engInch" class="SmallInput"></td>
                  <td align="left"><input onclick="if (checkNum(engInch.value)) compute(this.form,engInch.name,length_data)" type="button" value="换算" class="SmallButton" name="engInch_bt"></td>
                  <td colspan="3"></td>
                </tr>
              </tbody>
            </table>

<div align="center">
              <input onclick="resetAll(this.form)" type="button" value="数据重置" class="SmallButton" name="res7">
            </div>
      </form></td>
    </tr>
  </tbody>
</table>

</body>

</html>

度衡量换算 -- 长度换算

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