如何触发隐藏输入类型的onchange事件
问题描述：
大家好，
我的输入控件的类型是隐藏的。
请参考在html下面。
Hi All,
I have input control whose type is hidden.
Please refer the below html.
<input id="hdnEasyPLarID" type="hidden" class="hdnEasyPLarIDClass" runat="server" ="EasyP_ID_Changed();" />
隐藏输入的值可以通过代码隐藏（c＃）或使用脚本以编程方式更改。
但是当值改变时，onchange事件不会触发。
请告诉我如何继续。
先谢谢。
The value of hidden input is changed programmatically either by code behind(c#) or by using script.
But the onchange event is not firing when the value is changed.
Kindly advise me how to proceed.
Thanks in Advance.
答
onchange事件是一个用户事件。如果你通过脚本更改值，它将不会触发。
当被后面的代码更改时，它肯定不会触发。因为它是一个客户事件。页面从后面的代码返回后会发生绑定。
也许你应该澄清你想要完成的事情。
The onchange event is a user event. It will not fire if you change the value by script.
It will certainly not fire when changed by the code behind. Since it is a client event. The binding of it will happen after the page has returned from the code behind.
Perhaps you should clarify what you are trying to accomplish.
>
如果你想使用服务器事件，你需要使用asp：HiddenField服务器控件。
If you want to use server-events you'll need to use the asp:HiddenField server control.
<script type="text/javascript">
（document）.ready（function（）{
(document).ready(function () {