c=parseFloat(document.form.minenum.value)
d=parseFloat(document.form.partmount.value)
document.form.total.value=c+d;

解决方案 »

  1.   

    问题一:
    alert(eval(parseInt(c)+parseInt(d)))
    问题二:
    <html>
    <head>
    <script>
    function tde()
    {
      var tm=document.all("TTm");
      tm.rows(0).cells(1).style.display="none"
      tm.rows(1).cells(1).style.display="none"
    }
    </script>
    </head>
    <body onclick="tde();">
    <table name="TTm" id="TTm" border="1" cellpadding="0" cellspacing="0" width="100%">
      <tr>
        <td width="50%">dfad</td>
        <td width="50%">dsfa</td>
      </tr>
      <tr>
        <td width="50%">dsaf</td>
        <td width="50%">ds</td>
      </tr>
    </table>
    </body></html>