请问：第一个文本框中输入值，怎么才能够让第二个文本框得到的处理后的值也相第一个那样浮点化显示！！！！！！！！！
<html>
<head>
<title>无标题文档</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
</head>
<body bgcolor="#FFFFFF" text="#000000">
<script language=JavaScript>
// [dFilter] - A Numerical Input Mask for JavaScript
// Written By Dwayne Forehand - March 27th, 2003
// Please reuse & redistribute while keeping this notice.
var dFilterStep
function dFilterStrip (dFilterTemp, dFilterMask)
{
dFilterMask = replace(dFilterMask,'#','');
for (dFilterStep = 0; dFilterStep < dFilterMask.length++; dFilterStep++)
{
dFilterTemp = replace(dFilterTemp,dFilterMask.substring(dFilterStep,dFilterStep+1),'');
}
return dFilterTemp;
}
function dFilterMax (dFilterMask)
{
dFilterTemp = dFilterMask;
for (dFilterStep = 0; dFilterStep < (dFilterMask.length+1); dFilterStep++)
{
if (dFilterMask.charAt(dFilterStep)!='#')
{
dFilterTemp = replace(dFilterTemp,dFilterMask.charAt(dFilterStep),'');
}
}
return dFilterTemp.length;
}
function dFilter (key, textbox, dFilterMask)
{
dFilterNum = dFilterStrip(textbox.value, dFilterMask);
if (key==9)
{
return true;
}
else if (key==8&&dFilterNum.length!=0)
{
dFilterNum = dFilterNum.substring(0,dFilterNum.length-1);
}
else if ( ((key>47&&key<58)||(key>95&&key<106)) && dFilterNum.length<dFilterMax(dFilterMask) )
{
dFilterNum=dFilterNum+String.fromCharCode(key);
}
var dFilterFinal='';
for (dFilterStep = 0; dFilterStep < dFilterMask.length; dFilterStep++)
{
if (dFilterMask.charAt(dFilterStep)=='#')
{
if (dFilterNum.length!=0)
{
dFilterFinal = dFilterFinal + dFilterNum.charAt(0);
dFilterNum = dFilterNum.substring(1,dFilterNum.length);
}
else
{
dFilterFinal = dFilterFinal + "";
}
}
else if (dFilterMask.charAt(dFilterStep)!='#')
{
dFilterFinal = dFilterFinal + dFilterMask.charAt(dFilterStep);
}
// dFilterTemp = replace(dFilterTemp,dFilterMask.substring(dFilterStep,dFilterStep+1),'');
}
textbox.value = dFilterFinal;
return false;
}
function replace(fullString,text,by) {
// Replaces text with by in string
var strLength = fullString.length, txtLength = text.length;
if ((strLength == 0) || (txtLength == 0)) return fullString;
var i = fullString.indexOf(text);
if ((!i) && (text != fullString.substring(0,txtLength))) return fullString;
if (i == -1) return fullString;
var newstr = fullString.substring(0,i) + by;
if (i+txtLength < strLength)
newstr += replace(fullString.substring(i+txtLength,strLength),text,by);
return newstr;
}
</script>
<script language=JavaScript>
function myFilter(k, o) {
if (k==9||k==13||k==144||k==37||k==39||k==67||k==86||k==88||k==190||k==110) {
return true;
}
if (k==8) { // backSpace
return true;
}
else {if (k == 46) { // delete
return true;
}
else {if ((k>47&&k<58)||(k>95&&k<106)) { // digit
var oldV = replace(o.value, ",", "");
if (k<58) {oldV += "" + (k-48);}
else {oldV += "" + (k-96);}
var newV = "";
var i = oldV.lastIndexOf(".");
if (i >= 0) {newV = oldV.substring(i); oldV = oldV.substring(0,i);}
var j = 0;
for (i=oldV.length-1; i>0; i--) {
newV = oldV.charAt(i) + newV;
j++;
if (j==3) {j=0; newV = "," + newV;}
}
if (oldV.length>0) {newV = oldV.charAt(0) + newV;}
o.value = newV;
}
}
}
return false;
}
</script>
输入数字: bb
<input class=inpu type="text" onKeyDown="javascript:return myFilter(event.keyCode, this);" name="lrby_1" size="30" maxlength="20" onpropertyChange='lrqm_2.value=parseFloat(lrby_1.value.replace(/\,/g, ""))+2'>
<input class=inpu type="text" name="lrqm_2" size="30" maxlength="20" readonly >
</body>
</html>
