<div>
Put the following inside at the end the body part of your page &nbsp;(not in the HEAD section), idealy just before the closing &lt;&nbsp;/ body&gt; tag:<br />

<pre><code id="code-20-42820544-1">&lt;script&gt;
   var oldStartDate = _$(&quot;txtStartDate&quot;).value;
   var oldEndDate =_$(&quot;txtEndDate&quot;).value;
   var _$ = function(id) { return document.getElementById(id); }
   setTimerOut(function() {
         if( _$(&quot;txtStartDate&quot;).value != oldStartDate) _$(&quot;txtStartDate&quot;).change();
         if( _$(&quot;txtEndDate&quot;).value != oldEndDate) _$(&quot;txtStartDate&quot;).change();
   }, 200);
&lt;/script&gt;</code></pre>
</div>


Put the following inside at the end the body part of your page  (not in the HEAD section), idealy just before the closing < / body> tag:


<script>
   var oldStartDate = _$("txtStartDate").value;
   var oldEndDate =_$("txtEndDate").value;
   var _$ = function(id) { return document.getElementById(id); }
   setTimerOut(function() {
         if( _$("txtStartDate").value != oldStartDate) _$("txtStartDate").change();
         if( _$("txtEndDate").value != oldEndDate) _$("txtStartDate").change();
   }, 200);
</script>

<div>
<div class="content wysiwyg-content">
I had this question after viewing <a href="https://www.experts-exchange.com/questions/21308735/Textbox-Textchanged-event-doesn't-fire.html" rel="ugc">Textbox Textchanged event doesn't fire...</a>.
</div>
</div>


I had this question after viewing Textbox Textchanged event doesn't fire... (https://www.experts-exchange.com/questions/21308735/Textbox-Textchanged-event-doesn't-fire.html).

Unable to trigger Autopostback for a asp textbox  when picking date from calendar but autopostback works when user manually enters a date

The successor to Active Server Pages, ASP.NET websites utilize the .NET framework to produce dynamic, data and content-driven web applications and services. ASP.NET code can be written using any .NET supported language. As of 2009, ASP.NET can also apply the Model-View-Controller (MVC) pattern to web applications

ASP.NET

The .NET Framework is not specific to any one programming language; rather, it includes a library of functions that allows developers to rapidly build applications. Several supported languages include C#, VB.NET, C++ or ASP.NET.

.NET Programming

HTML (HyperText Markup Language) is the main markup language for creating web pages and other information to be displayed in a web browser, providing both the structure and content for what is sent from a web server through the use of tags. The current implementation of the HTML specification is HTML5.

HTML

C# is an object-oriented programming language created in conjunction with Microsoft’s .NET framework. Compilation is usually done into the Microsoft Intermediate Language (MSIL), which is then JIT-compiled to native code (and cached) during execution in the Common Language Runtime (CLR).

JavaScript is a dynamic, object-based language commonly used for client-side scripting in web browsers. Recently, server side JavaScript frameworks have also emerged. JavaScript runs on nearly every operating system and  in almost every mainstream web browser.