<script language="javascript" type="text/javascript">
$(function() {
  $("#txtInput").attr("value", "90");
  var v_temp = $("#lblMessage").text();
  //alert(v_temp);
  $("#txtInput01").attr("value", v_temp);
  $("#div1").removeClass("div1");
  $("#div1").addClass("divtest");
  var flog = $("#div1").hasClass("divtest");
  $("#div1").html("<input type='button' id='id123' style='width:100px; height:150px'>");
  var t01 = $("#table01 tr").length;
  alert(t01);
  $("#table01").find("td").each(function(i) {
    var t = $(this).text();
    alert(t);
  })
});
</script>

<form id="form1" runat="server">
  <div>
  <input type="text" id="txtInput" runat="server" style=" font:" />
  <br/>
  <asp:Label ID="lblMessage" Text="我在测试" runat="server"></asp:Label>
  <br/>
  <input type="text" id="txtInput01" runat="server" />
    <br />
    <asp:TextBox ID="TextBox1" runat="server" Width="156px"></asp:TextBox>
    <input type="button" onclick="createXMLHttpRequest()" />
    <asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>
  </div>
   <table id="table01" border="1px"><tr>
  <td>11</td><td>11</td></tr>
  <tr><td>22</td><td>22</td></tr>
  <tr><td>33</td><td>33</td></tr>
  <tr><td>44</td><td>44</td></tr>
  <tr><td>55</td><td>55</td></tr></table>
  <div id="div1" class="div1">
  </div>
</form>