度衡量换算 -- 面积换算

时间：2022-07-02 15:36:03 编辑：袖梨来源：一聚教程网

提示：您可以先修改部分代码再运行

<html>

<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>度衡量换算 -- 面积换算</title>
<SCRIPT language=JScript type=text/JScript>
<!--
function AREA_MEASURES()              
{
  this.mSquare_kilometer = (1000 * 1000)
  this.mHectare = (100 * 100)
  this.mSquare_meter = 1
  this.mAre = ((10000/15) * this.mSquare_meter)
  this.mSquare_decimeter = (0.1 * 0.1)
  this.mSquare_centimeter = (0.01 * 0.01)
  this.mSquare_millimeter = (0.001 * 0.001)
  this.engSquare_foot = (0.3048 * 0.3048)
  this.engSquare_yard = (3 * 3 * this.engSquare_foot)
  this.usSquare_rod = (16.5 *16.5 * this.engSquare_foot)
  this.engAcre = 160 * this.usSquare_rod
  this.engSquare_mile = (5280 *5280 * this.engSquare_foot)
  this.engSquare_inch = (this.engSquare_foot / (12 * 12))
}

var area_data = new AREA_MEASURES();

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

function resetAll(form)    
{
  resetValues(form,area_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="">
            <br>
            <TABLE width="75%" align="center" cellPadding=4 cellSpacing=0 class="small">
              <TBODY>
			                 <TR>
                  <TD colspan="6">　　可实现平方公里(km<SUP>2</SUP>)、公顷(ha)、市亩、平方米(m<SUP>2</SUP>)、平方分米(dm<SUP>2</SUP>)、平方厘米(cm<SUP>2</SUP>)、平方毫米(mm<SUP>2</SUP>)、平方英里(sq mi)、英亩、平方竿(sq rd)、平方码(sq yd)、平方英尺(sq ft)、平方英寸(sq in)间的互转互换。</TD>
                </TR>
			                 <TR>
			                   <TD colspan="6">　</TD>
                </TR>
				
                <TR>
                  <TD align=right noWrap>平方公里(km<SUP>2</SUP>)</TD>
                  <TD align=left><INPUT 
                              name=mSquare_kilometer class="SmallInput" size=15></TD>
                  <TD align=left><INPUT onclick="if (checkNum(mSquare_kilometer.value)) compute(this.form,mSquare_kilometer.name,area_data)" type=button value=换算  class='SmallButton'  name=mSquare_kilometer_bt></TD>
                  <TD align=right noWrap>公顷(ha)</TD>
                  <TD align=left><INPUT name=mHectare class="SmallInput" size=15></TD>
                  <TD align=left><INPUT onclick="if (checkNum(mHectare.value)) compute(this.form,mHectare.name,area_data)" type=button value=换算  class='SmallButton'  name=mHectare_bt></TD>
                </TR>
                <TR>
                  <TD align=right noWrap>市亩</TD>
                  <TD align=left><INPUT name=mAre class="SmallInput" size=15></TD>
                  <TD align=left><INPUT onclick="if (checkNum(mAre.value)) compute(this.form,mAre.name,area_data)" type=button value=换算  class='SmallButton'  name=mAre_bt></TD>
                  <TD align=right noWrap>平方米(m<SUP>2</SUP>)</TD>
                  <TD align=left><INPUT 
                            name=mSquare_meter class="SmallInput" size=15></TD>
                  <TD align=left><INPUT onclick="if (checkNum(mSquare_meter.value)) compute(this.form,mSquare_meter.name,area_data)" type=button value=换算  class='SmallButton'  name=mSquare_meter_bt></TD>
                </TR>
                <TR>
                  <TD align=right noWrap>平方分米(dm<SUP>2</SUP>)</TD>
                  <TD align=left><INPUT 
                              name=mSquare_decimeter class="SmallInput" size=15></TD>
                  <TD align=left><INPUT onclick="if (checkNum(mSquare_decimeter.value)) compute(this.form,mSquare_decimeter.name,area_data)" type=button value=换算  class='SmallButton'  name=mSquare_decimeter_bt></TD>
                  <TD align=right noWrap>平方厘米(cm<SUP>2</SUP>)</TD>
                  <TD align=left><INPUT 
                              name=mSquare_centimeter class="SmallInput" size=15></TD>
                  <TD align=left><INPUT onclick="if (checkNum(mSquare_centimeter.value)) compute(this.form,mSquare_centimeter.name,area_data)" type=button value=换算  class='SmallButton'  name=mSquare_centimeter_bt></TD>
                </TR>
                <TR>
                  <TD align=right noWrap>平方毫米(mm<SUP>2</SUP>)</TD>
                  <TD align=left><INPUT 
                              name=mSquare_millimeter class="SmallInput" size=15></TD>
                  <TD align=left><INPUT onclick="if (checkNum(mSquare_millimeter.value)) compute(this.form,mSquare_millimeter.name,area_data)" type=button value=换算  class='SmallButton'  name=mSquare_millimeter_bt></TD>
                  <TD align=right noWrap>平方英里(sq mi)</TD>
                  <TD align=left><INPUT 
                            name=engSquare_mile class="SmallInput" size=15></TD>
                  <TD align=left><INPUT onclick="if (checkNum(engSquare_mile.value)) compute(this.form,engSquare_mile.name,area_data)" type=button value=换算  class='SmallButton'  name=engSquare_mile_bt></TD>
                </TR>
                <TR>
                  <TD align=right noWrap>英亩</TD>
                  <TD align=left><INPUT name=engAcre class="SmallInput" size=15></TD>
                  <TD align=left><INPUT onclick="if (checkNum(engAcre.value)) compute(this.form,engAcre.name,area_data)" type=button value=换算  class='SmallButton'  name=engAcre_bt></TD>
                  <TD align=right noWrap>平方竿(sq rd)</TD>
                  <TD align=left><INPUT 
name=usSquare_rod class="SmallInput" size=15></TD>
                  <TD align=left><INPUT onclick="if (checkNum(usSquare_rod.value)) compute(this.form,usSquare_rod.name,area_data)" type=button value=换算  class='SmallButton'  name=usSquare_rod_bt></TD>
                </TR>
                <TR>
                  <TD align=right noWrap>平方码(sq yd)</TD>
                  <TD align=left><INPUT 
                            name=engSquare_yard class="SmallInput" size=15></TD>
                  <TD align=left><INPUT onclick="if (checkNum(engSquare_yard.value)) compute(this.form,engSquare_yard.name,area_data)" type=button value=换算  class='SmallButton'  name=engSquare_yard_bt></TD>
                  <TD align=right noWrap>平方英尺(sq ft)</TD>
                  <TD align=left><INPUT 
                            name=engSquare_foot class="SmallInput" size=15></TD>
                  <TD align=left><INPUT onclick="if (checkNum(engSquare_foot.value)) compute(this.form,engSquare_foot.name,area_data)" type=button value=换算  class='SmallButton'  name=engSquare_foot_bt></TD>
                </TR>
                <TR>
                  <TD align=right noWrap>平方英寸(sq in)</TD>
                  <TD align=left><INPUT 
                            name=engSquare_inch class="SmallInput" size=15></TD>
                  <TD align=left><INPUT onclick="if (checkNum(engSquare_inch.value)) compute(this.form,engSquare_inch.name,area_data)" type=button value=换算  class='SmallButton'  name=engSquare_inch_bt></TD>
                  <TD colSpan=3></TD>
                </TR>
              </TBODY>
            </TABLE>
            <br>
            <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>

提示：您可以先修改部分代码再运行

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