document.write("...")不显示的问题

Question

<table width="99%" cellpadding="0" cellspacing="0" align="center">
     <form name="form" method="post" action="messageManage.jsp">
     <tr height="22">
       <td></td>
     </tr>
     <tr>
       <td>
            <div align="center">
            <script language="javascript">
            var dd,s,i,m,d;
            dd = new Date(); 
            s = dd.getYear();
            m = dd.getMonth();
            d = dd.getDate();
            document.write("<select name=syear>");
            for(i=s;i>=s-10;i--)
            {
             document.write("<option value="+i);
             if(i==s)
             document.write(" selected");
             document.write(">"+i+"</option>");
            }
            document.write("</select>年");
            
            document.write("<select name=smonth>");
            for(i=1;i<=12,i++)
            {
             document.write("<option value="+i);
             if(i==m+1)
             document.write(" selected");
             document.write(">"+i+"</option>");
            }
            document.write("</select>月");
            
            document.write("<select name=sday>");
            for(i=1;i<=31;i++)
            {
             document.write("<option value="+i);
             if(i==d)
             document.write(" selected");
             document.write(">"+i+"</option>");
            }
            document.write("</select>日");
            
            document.write("--");
            
            document.write("<select name=eyear>");
            for(i=s;i>=s-10;i--)
            {
             document.write("<option value="+i);
             if(i==s)
             document.write(" selected");
             document.write(">"+i"</option>");
            }
            document.write("</select>年");
            
            document.write("<select name=emonth>");
            for(i=1;i<=12,i++)
            {
             document.write("<option value="+i);
             if(i==m+1)
             document.write(" selected");
             document.write(">"+i+"</option>");
            }
            document.write("</select>月");
            
            document.write("<select name=eday>");
            for(i=1;i<=31;i++)
            {
             document.write("<option value="+i);
             if(i==d)
             document.write(" selected");
             document.write(">"+i+"</option>");
            }
            document.write("</select>日");
            </script>
            <input type=submit name=submit value="查询">    
            </div></td></tr>
        </form>
       <tr height=22>
         <td></td>
       </tr>
    </table>
查询按钮能正常显示，但其它内容都不能显示，是什么原因？

Answer 1

javascript语法有问题，用Firefox， 然后看错误控制台，很容易看出来。
主要是for中应该用分号（；）你用了都好（，）。
还有一个i后面没有加+。
<table width="99%" cellpadding="0" cellspacing="0" align="center">
        <form name="form" method="post" action="messageManage.jsp">
        <tr height="22">
          <td></td>
        </tr>
        <tr>
          <td>
            <div align="center">
            <script language="javascript">
            var dd,s,i,m,d;
            dd = new Date(); 
            s = dd.getYear();
            m = dd.getMonth();
            d = dd.getDate();
            document.write("<select name=syear>");
            for(i=s;i>=s-10;i--)
            {
                document.write("<option value="+i);
                if(i==s)
                    document.write(" selected");
                document.write(">"+i+"</option>");
            }
            document.write("</select>年");
            
            document.write("<select name=smonth>");
            for(i=1;i<=12;i++)
            {
                document.write("<option value="+i);
                if(i==m+1)
                    document.write(" selected");
                document.write(">"+i+"</option>");
            }
            document.write("</select>月");
            
            document.write("<select name=sday>");
            for(i=1;i<=31;i++)
            {
                document.write("<option value="+i);
                if(i==d)
                    document.write(" selected");
                document.write(">"+i+"</option>");
            }
            document.write("</select>日");
            
            document.write("--");
            
            document.write("<select name=eyear>");
            for(i=s;i>=s-10;i--)
            {
                document.write("<option value="+i);
                if(i==s)
                    document.write(" selected");
                document.write(">"+i + "</option>");
            }
            document.write("</select>年");
            
            document.write("<select name=emonth>");
            for(i=1;i<=12;i++)
            {
                document.write("<option value="+i);
                if(i==m+1)
                    document.write(" selected");
                document.write(">"+i+"</option>");
            }
            document.write("</select>月");
            
            document.write("<select name=eday>");
            for(i=1;i<=31;i++)
            {
                document.write("<option value="+i);
                if(i==d)
                    document.write(" selected");
                document.write(">"+i+"</option>");
            }
            document.write("</select>日");
            </script>
            <input type=submit name=submit value="查询">        
            </div></td></tr>
        </form>
       <tr height=22>
         <td></td>
       </tr>
    </table>