javascript 怎么查找到 属性 title=4 的控件

Question

<table> 
<tr> 
<td> <asp:TextBox id="textbox1" runat="server" title="1">  <asp:TextBox> </td> 
<td> <asp:TextBox id="textbox2" runat="server" title="2">  </asp:TextBox> </td> 
<td> <asp:TextBox id="textbox3" runat="server" title="3">  </asp:TextBox> </td> 
<td> <asp:TextBox id="textbox4" runat="server" title="4">  </asp:TextBox> </td> 
<td> <asp:TextBox id="textbox5" runat="server" title="5">  </asp:TextBox> </td> 
</tr> 
</table> javascript 怎么查找到 title=4 的控件

Answer 1

 <script>        function aa()
        {
           for(i=0;i<tbs.length;i++)
           {
              if(tbs[i].type=="text" && tbs[i].title=="4")
              {
                 alert(tbs[i].outerHTML);
              }
           }
        }
    </script>            <table>
                <tr>
                    <td>
                        <asp:TextBox ID="textbox1" runat="server" title="1">  </asp:TextBox>
                    </td>
                    <td>
                        <asp:TextBox ID="textbox2" runat="server" title="2">  </asp:TextBox>
                    </td>
                    <td>
                        <asp:TextBox ID="textbox3" runat="server" title="3">  </asp:TextBox>
                    </td>
                    <td>
                        <asp:TextBox ID="textbox4" runat="server" title="4">  </asp:TextBox>
                    </td>
                    <td>
                        <asp:TextBox ID="textbox5" runat="server" title="5">  </asp:TextBox>
                    </td>
                </tr>
                <tr><td colspan="5"><input type="button" value="test" onclick="aa();"/></td></tr>
            </table>

Answer 2

document.GetElementById("") 好像...不行

Answer 3

 <script>function aa()
{
   var tbs = document.getElementsByTagName("INPUT");   for(i=0;i<tbs.length;i++)
   {
      if(tbs[i].type=="text" && tbs[i].title=="4")
      {
         alert(tbs[i].outerHTML);
      }
   }
}
    </script>
            <table>
                <tr>
                    <td>
                        <asp:TextBox ID="textbox1" runat="server" title="1">  </asp:TextBox>
                    </td>
                    <td>
                        <asp:TextBox ID="textbox2" runat="server" title="2">  </asp:TextBox>
                    </td>
                    <td>
                        <asp:TextBox ID="textbox3" runat="server" title="3">  </asp:TextBox>
                    </td>
                    <td>
                        <asp:TextBox ID="textbox4" runat="server" title="4">  </asp:TextBox>
                    </td>
                    <td>
                        <asp:TextBox ID="textbox5" runat="server" title="5">  </asp:TextBox>
                    </td>
                </tr>
                <tr><td colspan="5"><input type="button" value="test" onclick="aa();"/></td></tr>
            </table>差一句没粘上．．不好意思．