多文本框关联日期的问题（帮帮忙）

hookee你好！固定有十行给他填写。不会超过。
自动生成在文本框中，如果不出意外，他们不需要修改。只需要输入第一行的日期和其他行的金额即可。
谢谢

解决方案 »

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<script>
var dt = new Date();
var s = "";
var m = dt.getMonth()+1;
var y = dt.getFullYear();
var d = dt.getDate();
var lastDay;
var f;function init(){
f = document.form1;
lastDay = getLastDay(m,y);
for(var i=0;i<10;i++){
  var mm, obj;
  mm = m + i;
  if(mm<=12){
   obj = eval("f.m"+i);
    obj.value = mm;
    obj.index = i;
    obj.onblur=check;
    obj = eval("f.d"+i);
    if(getLastDay(mm,y)<lastDay) obj.value = getLastDay(mm,y);
    else obj.value = d;
    obj.index = i;
    obj.onblur=check;
    obj = eval("f.y"+i);
    obj.value = y;
    obj.index = i;
    obj.onblur=check;
    obj = eval("f.s"+i);
    obj.value = 0;
    obj.onblur=getSum;
  }
  else{
    obj = eval("f.s"+i);
    obj.value = 0;
  }
}
getSum();
}function getLastDay(pm,py){
  pm = parseInt(pm);
  py = parseInt(py);
  var dt2 = new Date(py,pm,1-1);
  return dt2.getDate();
}function getSum(){
  var sum = 0;
  for(var i=0;i<10;i++){
   obj = eval("f.s"+i);
    if(obj.value=="" || isNaN(obj.value)) obj.value = 0;
    sum += parseFloat(obj.value);
  }
  f.sum.value = sum;
}function check(){
var obj = event.srcElement;
if(isNaN(obj.value)){alert("该字段不是数字！");obj.focus();return false;}
var index = obj.index;
var om = eval("f.m" + index);
var oy = eval("f.y" + index);
var od = eval("f.d" + index);
    var cm  = parseInt(om.value)-1;
    var cd  = parseInt(od.value);
    var cy  = parseInt(oy.value);
    var cdt = new Date(cy,cm, cd);
    if(cdt.getFullYear()!= cy || cdt.getMonth() != cm || cdt.getDate() != cd){
      alert("日期无效！");obj.focus();return false;
    }
    for(var i=0;i<index;i++){
      var onm = eval("f.m" + i);
  var ony = eval("f.y" + i);
  var ond = eval("f.d" + i);
      var nm = parseInt(onm.value)-1;
  var ny = parseInt(ony.value);
  var nd = parseInt(ond.value);
  var ndt = new Date(ny,nm, nd);
  if(ndt.getTime()>cdt.getTime()){
   alert("日期小于前面的日期！");obj.focus();return false;
  }
    }
    for(var i=index+1;i<10;i++){
      var onm = eval("f.m" + i);
  var ony = eval("f.y" + i);
  var ond = eval("f.d" + i);
      if(onm.value != "" && ony.value != "" && ond.value!= ""){
        var nm = parseInt(onm.value)-1;
    var ny = parseInt(ony.value);
    var nd = parseInt(ond.value);
    var ndt = new Date(ny,nm, nd);
    if(ndt.getTime()<cdt.getTime()){
     alert("日期大于后面的日期！");obj.focus();return false;
    }
  }
    }
}</script><body onload="init();">
<form name="form1">
<table>
<tr>
<td><input type='text' name='m0'/>月</td>
<td><input type='text' name='d0'/>日</td>
<td><input type='text' name='y0'/>年</td>
<td><input type='text' name='s0'/>金额</td>
</tr>
<tr>
<td><input type='text' name='m1'/>月</td>
<td><input type='text' name='d1'/>日</td>
<td><input type='text' name='y1'/>年</td>
<td><input type='text' name='s1'/>金额</td>
</tr>
<tr>
<td><input type='text' name='m2'/>月</td>
<td><input type='text' name='d2'/>日</td>
<td><input type='text' name='y2'/>年</td>
<td><input type='text' name='s2'/>金额</td>
</tr>
<tr>
<td><input type='text' name='m3'/>月</td>
<td><input type='text' name='d3'/>日</td>
<td><input type='text' name='y3'/>年</td>
<td><input type='text' name='s3'/>金额</td>
</tr>
<tr>
<td><input type='text' name='m4'/>月</td>
<td><input type='text' name='d4'/>日</td>
<td><input type='text' name='y4'/>年</td>
<td><input type='text' name='s4'/>金额</td>
</tr>
<tr>
<td><input type='text' name='m5'/>月</td>
<td><input type='text' name='d5'/>日</td>
<td><input type='text' name='y5'/>年</td>
<td><input type='text' name='s5'/>金额</td>
</tr>
<tr>
<td><input type='text' name='m6'/>月</td>
<td><input type='text' name='d6'/>日</td>
<td><input type='text' name='y6'/>年</td>
<td><input type='text' name='s6'/>金额</td>
</tr>
<tr>
<td><input type='text' name='m7'/>月</td>
<td><input type='text' name='d7'/>日</td>
<td><input type='text' name='y7'/>年</td>
<td><input type='text' name='s7'/>金额</td>
</tr>
<tr>
<td><input type='text' name='m8'/>月</td>
<td><input type='text' name='d8'/>日</td>
<td><input type='text' name='y8'/>年</td>
<td><input type='text' name='s8'/>金额</td>
</tr>
<tr>
<td><input type='text' name='m9'/>月</td>
<td><input type='text' name='d9'/>日</td>
<td><input type='text' name='y9'/>年</td>
<td><input type='text' name='s9'/>金额</td>
</tr>
<tr>
<td colspan='3'></td>
<td><input type='text' name='sum'/>总金额</td>
</tr></table>
</form>
</body>
hookee你好！非常感谢你这么详细的回复！我运行了代码。看到一些效果。离成功不远了！第一行的日期默认要是当前日期，下面的都是下个月，这里是对的。
但是需要一个onKeyUp事件，如果用户修改了第一期，那从第二期的时间就自动更改。如果是修改第二期，那从第三期到第十期的就自动更改。这些框框比较多，用户肯定用Tab键跳下一个，能支持吗？复杂了一些。再次感谢！
<script>
var f;function init(){
f = document.form1;
var dt = new Date();
var s = "";
var m = dt.getMonth()+1;
var y = dt.getFullYear();
var d = dt.getDate();
var lastDay;
lastDay = getLastDay(m,y);
f.m0.value = m;
f.y0.value = y;
f.d0.value = d;load(0);
getSum();
f.m0.focus();
}
function load(n){
  var mm, obj;
  obj = eval("f.m"+n);
  obj.index = n;
  obj.onblur=check;
  obj.onfocus=dofocus;
  var m = parseInt(obj.value);
  obj = eval("f.y"+n);
  obj.index = n;
  obj.onblur=check;
  obj.onfocus=dofocus;
  var y = parseInt(obj.value);
  obj = eval("f.d"+n);
  obj.index = n;
  obj.onblur=check;
  obj.onfocus=dofocus;
  var d = parseInt(obj.value);
  var dt = new Date(y,m-1,d);
  var lastDay;
  lastDay = getLastDay(m,y);  for(var i=n+1;i<10;i++){
  mm = m + i-n;
  if(mm<=12){
   obj = eval("f.m"+i);
    obj.value = mm;
    obj.index = i;
    obj.onblur=check;
    obj.onfocus=dofocus;
    obj = eval("f.d"+i);
    if(getLastDay(mm,y)<lastDay && d==lastDay) obj.value = getLastDay(mm,y);
    else obj.value = d;
    obj.index = i;
    obj.onblur=check;
    obj.onfocus=dofocus;
    obj = eval("f.y"+i);
    obj.value = y;
    obj.index = i;
    obj.onblur=check;
    obj.onfocus=dofocus;
    obj = eval("f.s"+i);
    obj.value = 0;
    obj.onblur=getSum;
  }
  else{
    obj = eval("f.m"+i);
    obj.value = "";
    obj.onblur=null;
    obj.onfocus=null;
    obj = eval("f.y"+i);
    obj.value = "";
    obj.onblur=null;
    obj.onfocus=null;
    obj = eval("f.d"+i);
    obj.value = "";
    obj.onblur=null;
    obj.onfocus=null;
    obj = eval("f.s"+i);
    obj.value = 0;
  }
  }
}function getLastDay(pm,py){
  pm = parseInt(pm);
  py = parseInt(py);
  var dt2 = new Date(py,pm,1-1);
  return dt2.getDate();
}function getSum(){
  var sum = 0;
  for(var i=0;i<10;i++){
   obj = eval("f.s"+i);
    if(obj.value=="" || isNaN(obj.value)) obj.value = 0;
    sum += parseFloat(obj.value);
  }
  f.sum.value = sum;
}
function dofocus(){
  var obj = event.srcElement;
  window.val = obj.value;
}
function check(){
var obj = event.srcElement;
if(isNaN(obj.value)){alert("该字段不是数字！");obj.focus();return false;}
var index = obj.index;
var om = eval("f.m" + index);
var oy = eval("f.y" + index);
var od = eval("f.d" + index);
    var cm  = parseInt(om.value)-1;
    var cd  = parseInt(od.value);
    var cy  = parseInt(oy.value);
    var cdt = new Date(cy,cm, cd);
    if(cdt.getFullYear()!= cy || cdt.getMonth() != cm || cdt.getDate() != cd){
      alert("日期无效！");obj.focus();return false;
    }
    for(var i=0;i<index;i++){
      var onm = eval("f.m" + i);
  var ony = eval("f.y" + i);
  var ond = eval("f.d" + i);
      var nm = parseInt(onm.value)-1;
  var ny = parseInt(ony.value);
  var nd = parseInt(ond.value);
  var ndt = new Date(ny,nm, nd);
  if(ndt.getTime()>cdt.getTime()){
   alert("日期小于前面的日期！");obj.focus();return false;
  }
    }
/*
    for(var i=index+1;i<10;i++){
      var onm = eval("f.m" + i);
  var ony = eval("f.y" + i);
  var ond = eval("f.d" + i);
      if(onm.value != "" && ony.value != "" && ond.value!= ""){
        var nm = parseInt(onm.value)-1;
    var ny = parseInt(ony.value);
    var nd = parseInt(ond.value);
    var ndt = new Date(ny,nm, nd);
    if(ndt.getTime()<cdt.getTime()){
     alert("日期大于后面的日期！");obj.focus();return false;
    }
  }
    }
*/
    if(window.val != obj.value) load(index);
}
function myclick(dom, path){
var s = dom + path;
location.href=s;
}
</script><body onload="init();">
<form name="form1">
<table>
<tr>
<td><input type='text' name='m0' tabIndex='1'/>月</td>
<td><input type='text' name='d0' tabIndex='2'/>日</td>
<td><input type='text' name='y0' tabIndex='3'/>年</td>
<td><input type='text' name='s0' tabIndex='4'/>金额</td>
</tr>
<tr>
<td><input type='text' name='m1' tabIndex='5'/>月</td>
<td><input type='text' name='d1' tabIndex='6'/>日</td>
<td><input type='text' name='y1' tabIndex='7'/>年</td>
<td><input type='text' name='s1' tabIndex='8'/>金额</td>
</tr>
<tr>
<td><input type='text' name='m2' tabIndex='9'/>月</td>
<td><input type='text' name='d2' tabIndex='10'/>日</td>
<td><input type='text' name='y2' tabIndex='11'/>年</td>
<td><input type='text' name='s2' tabIndex='12'/>金额</td>
</tr>
<tr>
<td><input type='text' name='m3' tabIndex='13'/>月</td>
<td><input type='text' name='d3' tabIndex='14'/>日</td>
<td><input type='text' name='y3' tabIndex='15'/>年</td>
<td><input type='text' name='s3' tabIndex='16'/>金额</td>
</tr>
<tr>
<td><input type='text' name='m4' tabIndex='17'/>月</td>
<td><input type='text' name='d4' tabIndex='18'/>日</td>
<td><input type='text' name='y4' tabIndex='19'/>年</td>
<td><input type='text' name='s4' tabIndex='20'/>金额</td>
</tr>
<tr>
<td><input type='text' name='m5' tabIndex='21'/>月</td>
<td><input type='text' name='d5' tabIndex='22'/>日</td>
<td><input type='text' name='y5' tabIndex='23'/>年</td>
<td><input type='text' name='s5' tabIndex='24'/>金额</td>
</tr>
<tr>
<td><input type='text' name='m6' tabIndex='25'/>月</td>
<td><input type='text' name='d6' tabIndex='26'/>日</td>
<td><input type='text' name='y6' tabIndex='27'/>年</td>
<td><input type='text' name='s6' tabIndex='28'/>金额</td>
</tr>
<tr>
<td><input type='text' name='m7' tabIndex='29'/>月</td>
<td><input type='text' name='d7' tabIndex='30'/>日</td>
<td><input type='text' name='y7' tabIndex='31'/>年</td>
<td><input type='text' name='s7' tabIndex='32'/>金额</td>
</tr>
<tr>
<td><input type='text' name='m8' tabIndex='33'/>月</td>
<td><input type='text' name='d8' tabIndex='34'/>日</td>
<td><input type='text' name='y8' tabIndex='35'/>年</td>
<td><input type='text' name='s8' tabIndex='36'/>金额</td>
</tr>
<tr>
<td><input type='text' name='m9' tabIndex='37'/>月</td>
<td><input type='text' name='d9' tabIndex='38'/>日</td>
<td><input type='text' name='y9' tabIndex='39'/>年</td>
<td><input type='text' name='s9' tabIndex='40'/>金额</td>
</tr>
<tr>
<td colspan='3'></td>
<td><input type='text' name='sum' tabIndex='41'/>总金额</td>
</tr></table>
</form>
</body>
<script>
var f;function init(){
f = document.form1;
var dt = new Date();
var s = "";
var m = dt.getMonth()+1;
var y = dt.getFullYear();
var d = dt.getDate();
var lastDay;
lastDay = getLastDay(m,y);
f.m0.value = m;
f.y0.value = y;
f.d0.value = d;load(0);
getSum();
f.m0.focus();
}
function load(n){
  var mm, obj;
  obj = eval("f.m"+n);
  obj.index = n;
  obj.onblur=check;
  obj.onfocus=dofocus;
  var m = parseInt(obj.value);
  obj = eval("f.y"+n);
  obj.index = n;
  obj.onblur=check;
  obj.onfocus=dofocus;
  var y = parseInt(obj.value);
  obj = eval("f.d"+n);
  obj.index = n;
  obj.onblur=check;
  obj.onfocus=dofocus;
  var d = parseInt(obj.value);
  var dt;
  var lastDay;
  lastDay = getLastDay(m,y);  for(var i=n+1;i<10;i++){
    mm = m + i-n;
    dt = new Date(y,mm-1,d);
    var mmm = dt.getMonth()+1;
    var yy = dt.getFullYear();
   obj = eval("f.m"+i);
    obj.value = mmm;
    obj.index = i;
    obj.onblur=check;
    obj.onfocus=dofocus;
    obj = eval("f.d"+i);
    if(getLastDay(mmm,yy)<lastDay && d==lastDay) obj.value = getLastDay(mmm,yy);
    else obj.value = d;
    obj.index = i;
    obj.onblur=check;
    obj.onfocus=dofocus;
    obj = eval("f.y"+i);
    obj.value = yy;
    obj.index = i;
    obj.onblur=check;
    obj.onfocus=dofocus;
    obj = eval("f.s"+i);
    obj.value = 0;
    obj.onblur=getSum;
  }
}function getLastDay(pm,py){
  pm = parseInt(pm);
  py = parseInt(py);
  var dt2 = new Date(py,pm,1-1);
  return dt2.getDate();
}function getSum(){
  var sum = 0;
  for(var i=0;i<10;i++){
   obj = eval("f.s"+i);
    if(obj.value=="" || isNaN(obj.value)) obj.value = 0;
    sum += parseFloat(obj.value);
  }
  f.sum.value = sum;
}
function dofocus(){
  var obj = event.srcElement;
  window.val = obj.value;
}
function check(){
var obj = event.srcElement;
if(isNaN(obj.value)){alert("该字段不是数字！");obj.focus();return false;}
var index = obj.index;
var om = eval("f.m" + index);
var oy = eval("f.y" + index);
var od = eval("f.d" + index);
    var cm  = parseInt(om.value)-1;
    var cd  = parseInt(od.value);
    var cy  = parseInt(oy.value);
    var cdt = new Date(cy,cm, cd);
    if(cdt.getFullYear()!= cy || cdt.getMonth() != cm || cdt.getDate() != cd){
      alert("日期无效！");obj.focus();return false;
    }
    for(var i=0;i<index;i++){
      var onm = eval("f.m" + i);
  var ony = eval("f.y" + i);
  var ond = eval("f.d" + i);
      var nm = parseInt(onm.value)-1;
  var ny = parseInt(ony.value);
  var nd = parseInt(ond.value);
  var ndt = new Date(ny,nm, nd);
  if(ndt.getTime()>cdt.getTime()){
   alert("日期小于前面的日期！");obj.focus();return false;
  }
    }
/*
    for(var i=index+1;i<10;i++){
      var onm = eval("f.m" + i);
  var ony = eval("f.y" + i);
  var ond = eval("f.d" + i);
      if(onm.value != "" && ony.value != "" && ond.value!= ""){
        var nm = parseInt(onm.value)-1;
    var ny = parseInt(ony.value);
    var nd = parseInt(ond.value);
    var ndt = new Date(ny,nm, nd);
    if(ndt.getTime()<cdt.getTime()){
     alert("日期大于后面的日期！");obj.focus();return false;
    }
  }
    }
*/
    if(window.val != obj.value) load(index);
}
function myclick(dom, path){
var s = dom + path;
location.href=s;
}
</script><body onload="init();">
<form name="form1">
<table>
<tr>
<td><input type='text' name='m0' tabIndex='1'/>月</td>
<td><input type='text' name='d0' tabIndex='2'/>日</td>
<td><input type='text' name='y0' tabIndex='3'/>年</td>
<td><input type='text' name='s0' tabIndex='4'/>金额</td>
</tr>
<tr>
<td><input type='text' name='m1' tabIndex='5'/>月</td>
<td><input type='text' name='d1' tabIndex='6'/>日</td>
<td><input type='text' name='y1' tabIndex='7'/>年</td>
<td><input type='text' name='s1' tabIndex='8'/>金额</td>
</tr>
<tr>
<td><input type='text' name='m2' tabIndex='9'/>月</td>
<td><input type='text' name='d2' tabIndex='10'/>日</td>
<td><input type='text' name='y2' tabIndex='11'/>年</td>
<td><input type='text' name='s2' tabIndex='12'/>金额</td>
</tr>
<tr>
<td><input type='text' name='m3' tabIndex='13'/>月</td>
<td><input type='text' name='d3' tabIndex='14'/>日</td>
<td><input type='text' name='y3' tabIndex='15'/>年</td>
<td><input type='text' name='s3' tabIndex='16'/>金额</td>
</tr>
<tr>
<td><input type='text' name='m4' tabIndex='17'/>月</td>
<td><input type='text' name='d4' tabIndex='18'/>日</td>
<td><input type='text' name='y4' tabIndex='19'/>年</td>
<td><input type='text' name='s4' tabIndex='20'/>金额</td>
</tr>
<tr>
<td><input type='text' name='m5' tabIndex='21'/>月</td>
<td><input type='text' name='d5' tabIndex='22'/>日</td>
<td><input type='text' name='y5' tabIndex='23'/>年</td>
<td><input type='text' name='s5' tabIndex='24'/>金额</td>
</tr>
<tr>
<td><input type='text' name='m6' tabIndex='25'/>月</td>
<td><input type='text' name='d6' tabIndex='26'/>日</td>
<td><input type='text' name='y6' tabIndex='27'/>年</td>
<td><input type='text' name='s6' tabIndex='28'/>金额</td>
</tr>
<tr>
<td><input type='text' name='m7' tabIndex='29'/>月</td>
<td><input type='text' name='d7' tabIndex='30'/>日</td>
<td><input type='text' name='y7' tabIndex='31'/>年</td>
<td><input type='text' name='s7' tabIndex='32'/>金额</td>
</tr>
<tr>
<td><input type='text' name='m8' tabIndex='33'/>月</td>
<td><input type='text' name='d8' tabIndex='34'/>日</td>
<td><input type='text' name='y8' tabIndex='35'/>年</td>
<td><input type='text' name='s8' tabIndex='36'/>金额</td>
</tr>
<tr>
<td><input type='text' name='m9' tabIndex='37'/>月</td>
<td><input type='text' name='d9' tabIndex='38'/>日</td>
<td><input type='text' name='y9' tabIndex='39'/>年</td>
<td><input type='text' name='s9' tabIndex='40'/>金额</td>
</tr>
<tr>
<td colspan='3'></td>
<td><input type='text' name='sum' tabIndex='41'/>总金额</td>
</tr></table>
</form>
</body>
<script>
var f;function init(){
f = document.form1;
var dt = new Date();
var s = "";
var m = dt.getMonth()+1;
var y = dt.getFullYear();
var d = dt.getDate();
var lastDay;
lastDay = getLastDay(m,y);
f.m0.value = m;
f.y0.value = y;
f.d0.value = d;load(0);
getSum();
f.m0.focus();
}
function load(n){
  var mm, obj;
  obj = eval("f.m"+n);
  obj.index = n;
  obj.onblur=check;
  obj.onfocus=dofocus;
  var m = parseInt(obj.value);
  obj = eval("f.y"+n);
  obj.index = n;
  obj.onblur=check;
  obj.onfocus=dofocus;
  var y = parseInt(obj.value);
  obj = eval("f.d"+n);
  obj.index = n;
  obj.onblur=check;
  obj.onfocus=dofocus;
  var d = parseInt(obj.value);
  var dt;
  var lastDay;
  lastDay = getLastDay(m,y);  for(var i=n+1;i<10;i++){
    mm = m + i-n;
    var dd;
    dt = new Date(y,mm-1,d);
    if(dt.getMonth()!=(mm-1) || dt.getFullYear()!=y) dd = getLastDay(mm,y);
    else dd = d;
    dt = new Date(y,mm-1,dd);
    var mmm = dt.getMonth()+1;
    var yy = dt.getFullYear();
   obj = eval("f.m"+i);
    obj.value = mmm;
    obj.index = i;
    obj.onblur=check;
    obj.onfocus=dofocus;
    obj = eval("f.d"+i);
    obj.value = dd;
    obj.index = i;
    obj.onblur=check;
    obj.onfocus=dofocus;
    obj = eval("f.y"+i);
    obj.value = yy;
    obj.index = i;
    obj.onblur=check;
    obj.onfocus=dofocus;
    obj = eval("f.s"+i);
    obj.value = 0;
    obj.onblur=getSum;
  }
}function getLastDay(pm,py){
  pm = parseInt(pm);
  py = parseInt(py);
  var dt2 = new Date(py,pm,1-1);
  return dt2.getDate();
}function getSum(){
  var sum = 0;
  for(var i=0;i<10;i++){
   obj = eval("f.s"+i);
    if(obj.value=="" || isNaN(obj.value)) obj.value = 0;
    sum += parseFloat(obj.value);
  }
  f.sum.value = sum;
}
function dofocus(){
  var obj = event.srcElement;
  window.val = obj.value;
}
function check(){
var obj = event.srcElement;
if(isNaN(obj.value)){alert("该字段不是数字！");obj.focus();return false;}
var index = obj.index;
var om = eval("f.m" + index);
var oy = eval("f.y" + index);
var od = eval("f.d" + index);
    var cm  = parseInt(om.value)-1;
    var cd  = parseInt(od.value);
    var cy  = parseInt(oy.value);
    var cdt = new Date(cy,cm, cd);
    if(cdt.getFullYear()!= cy || cdt.getMonth() != cm || cdt.getDate() != cd){
      alert("日期无效！");obj.focus();return false;
    }
    for(var i=0;i<index;i++){
      var onm = eval("f.m" + i);
  var ony = eval("f.y" + i);
  var ond = eval("f.d" + i);
      var nm = parseInt(onm.value)-1;
  var ny = parseInt(ony.value);
  var nd = parseInt(ond.value);
  var ndt = new Date(ny,nm, nd);
  if(ndt.getTime()>cdt.getTime()){
   alert("日期小于前面的日期！");obj.focus();return false;
  }
    }
/*
    for(var i=index+1;i<10;i++){
      var onm = eval("f.m" + i);
  var ony = eval("f.y" + i);
  var ond = eval("f.d" + i);
      if(onm.value != "" && ony.value != "" && ond.value!= ""){
        var nm = parseInt(onm.value)-1;
    var ny = parseInt(ony.value);
    var nd = parseInt(ond.value);
    var ndt = new Date(ny,nm, nd);
    if(ndt.getTime()<cdt.getTime()){
     alert("日期大于后面的日期！");obj.focus();return false;
    }
  }
    }
*/
    if(window.val != obj.value) load(index);
}
function myclick(dom, path){
var s = dom + path;
location.href=s;
}
</script><body onload="init();">
<form name="form1">
<table>
<tr>
<td><input type='text' name='m0' tabIndex='1'/>月</td>
<td><input type='text' name='d0' tabIndex='2'/>日</td>
<td><input type='text' name='y0' tabIndex='3'/>年</td>
<td><input type='text' name='s0' tabIndex='4'/>金额</td>
</tr>
<tr>
<td><input type='text' name='m1' tabIndex='5'/>月</td>
<td><input type='text' name='d1' tabIndex='6'/>日</td>
<td><input type='text' name='y1' tabIndex='7'/>年</td>
<td><input type='text' name='s1' tabIndex='8'/>金额</td>
</tr>
<tr>
<td><input type='text' name='m2' tabIndex='9'/>月</td>
<td><input type='text' name='d2' tabIndex='10'/>日</td>
<td><input type='text' name='y2' tabIndex='11'/>年</td>
<td><input type='text' name='s2' tabIndex='12'/>金额</td>
</tr>
<tr>
<td><input type='text' name='m3' tabIndex='13'/>月</td>
<td><input type='text' name='d3' tabIndex='14'/>日</td>
<td><input type='text' name='y3' tabIndex='15'/>年</td>
<td><input type='text' name='s3' tabIndex='16'/>金额</td>
</tr>
<tr>
<td><input type='text' name='m4' tabIndex='17'/>月</td>
<td><input type='text' name='d4' tabIndex='18'/>日</td>
<td><input type='text' name='y4' tabIndex='19'/>年</td>
<td><input type='text' name='s4' tabIndex='20'/>金额</td>
</tr>
<tr>
<td><input type='text' name='m5' tabIndex='21'/>月</td>
<td><input type='text' name='d5' tabIndex='22'/>日</td>
<td><input type='text' name='y5' tabIndex='23'/>年</td>
<td><input type='text' name='s5' tabIndex='24'/>金额</td>
</tr>
<tr>
<td><input type='text' name='m6' tabIndex='25'/>月</td>
<td><input type='text' name='d6' tabIndex='26'/>日</td>
<td><input type='text' name='y6' tabIndex='27'/>年</td>
<td><input type='text' name='s6' tabIndex='28'/>金额</td>
</tr>
<tr>
<td><input type='text' name='m7' tabIndex='29'/>月</td>
<td><input type='text' name='d7' tabIndex='30'/>日</td>
<td><input type='text' name='y7' tabIndex='31'/>年</td>
<td><input type='text' name='s7' tabIndex='32'/>金额</td>
</tr>
<tr>
<td><input type='text' name='m8' tabIndex='33'/>月</td>
<td><input type='text' name='d8' tabIndex='34'/>日</td>
<td><input type='text' name='y8' tabIndex='35'/>年</td>
<td><input type='text' name='s8' tabIndex='36'/>金额</td>
</tr>
<tr>
<td><input type='text' name='m9' tabIndex='37'/>月</td>
<td><input type='text' name='d9' tabIndex='38'/>日</td>
<td><input type='text' name='y9' tabIndex='39'/>年</td>
<td><input type='text' name='s9' tabIndex='40'/>金额</td>
</tr>
<tr>
<td colspan='3'></td>
<td><input type='text' name='sum' tabIndex='41'/>总金额</td>
</tr></table>
</form>
</body>
修改如下帖，至于添加行修改最前面的参数total，然后在HTML代码中加入所需的行代码，并且修改名称顺序，比如total=11,那么在
<tr>
<td><input type='text' name='m9' tabIndex='37'/>月</td>
<td><input type='text' name='d9' tabIndex='38'/>日</td>
<td><input type='text' name='y9' tabIndex='39'/>年</td>
<td><input type='text' name='s9' tabIndex='40'/>金额</td>
</tr>
后面加上
<tr>
<td><input type='text' name='m10' tabIndex='41'/>月</td>
<td><input type='text' name='d10' tabIndex='42'/>日</td>
<td><input type='text' name='y10' tabIndex='43'/>年</td>
<td><input type='text' name='s10' tabIndex='44'/>金额</td>
</tr>
注意，name属性里面的数字最后是total-1,即10。tabIndex也相应顺序添加，看一下规律就明白了
<script>
var f;
var total = 10;function init(){
f = document.form1;
var dt = new Date();
var s = "";
var m = dt.getMonth()+1;
var y = dt.getFullYear();
var d = dt.getDate();
var lastDay;
lastDay = getLastDay(m,y);
f.m0.value = m;
f.y0.value = y;
f.d0.value = d;load(0);
getSum();
f.m0.focus();
}
function load(n){
  var mm, obj;
  obj = eval("f.m"+n);
  obj.index = n;
  obj.onblur=check;
  obj.onfocus=dofocus;
  var m = parseInt(obj.value);
  obj = eval("f.y"+n);
  obj.index = n;
  obj.onblur=check;
  obj.onfocus=dofocus;
  var y = parseInt(obj.value);
  obj = eval("f.d"+n);
  obj.index = n;
  obj.onblur=check;
  obj.onfocus=dofocus;
  var d = parseInt(obj.value);
  var dt;
  var lastDay;
  lastDay = getLastDay(m,y);  for(var i=n+1;i<total;i++){
    mm = m + i-n;
    var dd;
    dt = new Date(y,mm-1,d);
    if(d == dt.getDate()) dd = d;
    else dd = getLastDay(mm,y);
    dt = new Date(y,mm-1,dd);
    var mmm = dt.getMonth()+1;
    var yy = dt.getFullYear();
   obj = eval("f.m"+i);
    obj.value = mmm;
    obj.index = i;
    obj.onblur=check;
    obj.onfocus=dofocus;
    obj = eval("f.d"+i);
    obj.value = dd;
    obj.index = i;
    obj.onblur=check;
    obj.onfocus=dofocus;
    obj = eval("f.y"+i);
    obj.value = yy;
    obj.index = i;
    obj.onblur=check;
    obj.onfocus=dofocus;
    obj = eval("f.s"+i);
    obj.value = 0;
    obj.onblur=getSum;
  }
}function getLastDay(pm,py){
  pm = parseInt(pm);
  py = parseInt(py);
  var dt2 = new Date(py,pm,1-1);
  return dt2.getDate();
}function getSum(){
  var sum = 0;
  for(var i=0;i<total;i++){
   obj = eval("f.s"+i);
    if(obj.value=="" || isNaN(obj.value)) obj.value = 0;
    sum += parseFloat(obj.value);
  }
  f.sum.value = sum;
}
function dofocus(){
  var obj = event.srcElement;
  window.val = obj.value;
}
function check(){
var obj = event.srcElement;
if(isNaN(obj.value)){alert("该字段不是数字！");obj.focus();return false;}
var index = obj.index;
var om = eval("f.m" + index);
var oy = eval("f.y" + index);
var od = eval("f.d" + index);
    var cm  = parseInt(om.value)-1;
    var cd  = parseInt(od.value);
    var cy  = parseInt(oy.value);
    var cdt = new Date(cy,cm, cd);
    if(cdt.getFullYear()!= cy || cdt.getMonth() != cm || cdt.getDate() != cd){
      alert("日期无效！");obj.focus();return false;
    }
    for(var i=0;i<index;i++){
      var onm = eval("f.m" + i);
  var ony = eval("f.y" + i);
  var ond = eval("f.d" + i);
      var nm = parseInt(onm.value)-1;
  var ny = parseInt(ony.value);
  var nd = parseInt(ond.value);
  var ndt = new Date(ny,nm, nd);
  if(ndt.getTime()>cdt.getTime()){
   alert("日期小于前面的日期！");obj.focus();return false;
  }
    }
/*
    for(var i=index+1;i<total;i++){
      var onm = eval("f.m" + i);
  var ony = eval("f.y" + i);
  var ond = eval("f.d" + i);
      if(onm.value != "" && ony.value != "" && ond.value!= ""){
        var nm = parseInt(onm.value)-1;
    var ny = parseInt(ony.value);
    var nd = parseInt(ond.value);
    var ndt = new Date(ny,nm, nd);
    if(ndt.getTime()<cdt.getTime()){
     alert("日期大于后面的日期！");obj.focus();return false;
    }
  }
    }
*/
    if(window.val != obj.value) load(index);
}
function myclick(dom, path){
var s = dom + path;
location.href=s;
}
</script><body onload="init();">
<form name="form1">
<table>
<tr>
<td><input type='text' name='m0' tabIndex='1'/>月</td>
<td><input type='text' name='d0' tabIndex='2'/>日</td>
<td><input type='text' name='y0' tabIndex='3'/>年</td>
<td><input type='text' name='s0' tabIndex='4'/>金额</td>
</tr>
<tr>
<td><input type='text' name='m1' tabIndex='5'/>月</td>
<td><input type='text' name='d1' tabIndex='6'/>日</td>
<td><input type='text' name='y1' tabIndex='7'/>年</td>
<td><input type='text' name='s1' tabIndex='8'/>金额</td>
</tr>
<tr>
<td><input type='text' name='m2' tabIndex='9'/>月</td>
<td><input type='text' name='d2' tabIndex='10'/>日</td>
<td><input type='text' name='y2' tabIndex='11'/>年</td>
<td><input type='text' name='s2' tabIndex='12'/>金额</td>
</tr>
<tr>
<td><input type='text' name='m3' tabIndex='13'/>月</td>
<td><input type='text' name='d3' tabIndex='14'/>日</td>
<td><input type='text' name='y3' tabIndex='15'/>年</td>
<td><input type='text' name='s3' tabIndex='16'/>金额</td>
</tr>
<tr>
<td><input type='text' name='m4' tabIndex='17'/>月</td>
<td><input type='text' name='d4' tabIndex='18'/>日</td>
<td><input type='text' name='y4' tabIndex='19'/>年</td>
<td><input type='text' name='s4' tabIndex='20'/>金额</td>
</tr>
<tr>
<td><input type='text' name='m5' tabIndex='21'/>月</td>
<td><input type='text' name='d5' tabIndex='22'/>日</td>
<td><input type='text' name='y5' tabIndex='23'/>年</td>
<td><input type='text' name='s5' tabIndex='24'/>金额</td>
</tr>
<tr>
<td><input type='text' name='m6' tabIndex='25'/>月</td>
<td><input type='text' name='d6' tabIndex='26'/>日</td>
<td><input type='text' name='y6' tabIndex='27'/>年</td>
<td><input type='text' name='s6' tabIndex='28'/>金额</td>
</tr>
<tr>
<td><input type='text' name='m7' tabIndex='29'/>月</td>
<td><input type='text' name='d7' tabIndex='30'/>日</td>
<td><input type='text' name='y7' tabIndex='31'/>年</td>
<td><input type='text' name='s7' tabIndex='32'/>金额</td>
</tr>
<tr>
<td><input type='text' name='m8' tabIndex='33'/>月</td>
<td><input type='text' name='d8' tabIndex='34'/>日</td>
<td><input type='text' name='y8' tabIndex='35'/>年</td>
<td><input type='text' name='s8' tabIndex='36'/>金额</td>
</tr>
<tr>
<td><input type='text' name='m9' tabIndex='37'/>月</td>
<td><input type='text' name='d9' tabIndex='38'/>日</td>
<td><input type='text' name='y9' tabIndex='39'/>年</td>
<td><input type='text' name='s9' tabIndex='40'/>金额</td>
</tr>
<tr>
<td colspan='3'></td>
<td><input type='text' name='sum' tabIndex='41'/>总金额</td>
</tr></table>
</form>
</body>