[英]How to get Id update panel that initial a request in javascript
I want to know Id update panel that initial a request in JavaScript.I write this script but it return undefined
.我想知道在 JavaScript 中发起请求的 Id 更新面板。我写了这个脚本,但它返回
undefined
。
var prm = Sys.WebForms.PageRequestManager.getInstance();
prm.add_initializeRequest(InitializeRequest);
prm.add_endRequest(EndRequest);
function InitializeRequest(sender, args) {
alert(sender.ID);
}
function EndRequest(sender, args) {
}
sender
is not null and it return [object]
but How I can get ID
? sender
不是 null,它返回[object]
但我如何获得ID
?
Edit 1)编辑 1)
I think when UpdatePanel
be inside MasterPage
it does not work.this is my code:我认为当
UpdatePanel
位于MasterPage
内时它不起作用。这是我的代码:
<script type="text/javascript">
$(document).ready(function () {
var prm = Sys.WebForms.PageRequestManager.getInstance();
prm.add_initializeRequest(InitializeRequest);
prm.add_endRequest(EndRequest);
function InitializeRequest(sender, args) {
var UpdPanelsIds = args.get_updatePanelsToUpdate();
alert(UpdPanelsIds[0]);
}
function EndRequest(sender, args) {
if ($('.AlarmLogo').val() == "3") {
alert('nima');
}
}
});
</script>
and:和:
<form runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<asp:Timer ID="timer" Interval="4000" runat="server" OnTick="timer_Tick" />
<asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional">
<ContentTemplate>
<asp:Panel ID="pnlAlarm" runat="server" CssClass="pnlAlarm" ClientIDMode="Static">
<a href="#">
<div id="Alarm">
<asp:TextBox ID="lblContent" runat="server" Text="HHHEEELLLOOO" CssClass="AlarmLogo" ClientIDMode="Static"></asp:TextBox>
</div>
</a>
</asp:Panel>
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="timer" />
</Triggers>
</asp:UpdatePanel>
<div class="main">
<asp:ContentPlaceHolder ID="MainContent" runat="server" />
</div>
</form>
and code behind:和背后的代码:
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
Session["nima"] = 1;
}
}
protected void timer_Tick(object sender, EventArgs e)
{
}
You can use the get_updatePanelsToUpdate
that return an array with the Ids of the UpdatePanels that will be going to updated.您可以使用
get_updatePanelsToUpdate
返回一个数组,其中包含将要更新的 UpdatePanel 的 ID。
<script>
window.onload = function() {
var prm = Sys.WebForms.PageRequestManager.getInstance();
prm.add_initializeRequest(InitializeRequest);
prm.add_endRequest(EndRequest);
};
function InitializeRequest(sender, args)
{
// get the array of update panels id
var UpdPanelsIds = args.get_updatePanelsToUpdate();
// get the Post ID
args.get_postBackElement().id;
}
function EndRequest(sender, args) {
}
</script>
http://msdn.microsoft.com/en-us/library/ee224805.aspx http://msdn.microsoft.com/en-us/library/ee224805.aspx
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