javascript onchange事件到asp.net下拉列表

Question

是否有可能使下拉列表选择触发器返回到同一页面,其中使用javascript将所选内容添加到URL作为查询字符串？问题是列表是从某个共享点列表动态加载的.如果我的网站是mysite.com/default.aspx所以当做出选择时,它应该重定向到mysite.com/default.aspx?key=selection

没有服务器访问,无法访问codebehind :(

 <asp:DropDownList runat="server" id="DropDownList1" DataSourceID="spdatasource1" DataValueField="CategoryName" AutoPostBack="True" Onchange="window.open( Go to some link)">
                                                 </asp:DropDownList>

Answer 1

var selectedOption = $("#DropDownList1 option:selected").text();

$("#DropDownList1").change(function(e) {
      url: "mysite.com/default.aspx?key=" + selectedOption;
      window.location = url;
});

未经测试,也不确定重新加载页面的事件,例如(提交或锚定)

另一种选择(可能更好)来自http://tinyurl.com/82ter35

$(document).ready(function() {

   var selectedOption = $("#DropDownList1 option:selected").text();

  $("#DropDownList1").change(function() {
    $.ajax({
      type: "POST",
      url: "mysite.com/default.aspx?key=" + selectedOption,
      data: "{}",
      contentType: "application/json; charset=utf-8",
      dataType: "json",
      success: function(msg) {
        // Replace the div's content with the page method's return.
        alert("this worked!");
      }
    });
  });
});