实用的长度换算js脚本，输入任何一项后直接计算出其他项数值，结合自己的需求来修改这个换算代码即可。
<html>
<head>
<meta http-equiv="content-Type" content="text/html;charset=gb2312">
<meta name="keywords" content="武鸣人网站,武鸣信息网,武鸣本地网,武鸣信息资源平台,减肥,健身,励志,励志语录,js特效,网页特效,www.wuming.ren">
<meta name="description" content="欢迎来到武鸣人信息资源平台，各种信息免费发布，资源共享合作共赢，分享互联网流行的励志语录经典短句，减肥健身健康小常识及打卡记录，收集各种js特效代码。">
<title>长度换算js脚本代码_武鸣人</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
}//武鸣人网站https://www.wuming.ren 网站很好记住，wuming.ren(武鸣拼音.ren域名后缀)
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
}//武鸣人网站https://www.wuming.ren 网站很好记住，wuming.ren(武鸣拼音.ren域名后缀)
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);
}//武鸣人网站https://www.wuming.ren 网站很好记住，wuming.ren(武鸣拼音.ren域名后缀)
</SCRIPT>
</head>
<body>
<a href="https://www.wuming.ren">武鸣人</a>，各种信息资源免费发布，分享励志语录经典短句，减肥健身常识，各种js特效代码。网站很好记住，wuming.ren(武鸣拼音.ren域名后缀)<hr>
<!--欢迎来到武鸣人信息资源平台，各种信息免费发布，资源共享合作共赢，分享互联网流行的励志语录经典短句，减肥健身健康小常识及打卡记录，收集各种js特效代码。-->
<script type="text/javascript" src="https://www.wuming.ren/ad/tc.js"></script>
<script type="text/javascript" src="https://www.wuming.ren/ad/a.js"></script>
<TABLE width="100%" border="0" cellPadding=0 cellSpacing=0 class="small">
<TBODY>
<TR>
<TD align="center" valign="top">
<FORM action="">
<br>
<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>
<br>
<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>
<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>本文来自武鸣人网站，转载请注明出处