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<blockquote>how can I forece the div to reload the asp code? </blockquote>you don't or can't what you do is you load the page again with Ajax and replace the current productos with the productos of the page you load loaded silently with_ajax 
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<pre><code class="code-10 nolinks" id="code-20-43292814-1">&lt;html&gt;
&lt;body&gt;
&lt;%rec=1%&gt;
&lt;form method="get" name="nuevo&lt;%=rec%&gt;" action="nuevo.asp" target="MyIFrame"&gt;
&nbsp;&lt;a href="#" class="toggleProductos toggleProductos&lt;%=rec%&gt;"&gt; Open / Close asp&lt;/a&gt;
&lt;div style="display:none;text-align:left;"&gt;
&lt;%randomize
response.write rnd%&gt;
&lt;/div&gt;
&lt;script src="https://code.jquery.com/jquery-3.6.0.slim.min.js" integrity="sha256-u7e5khyithlIdTpu22PHhENmPcRdFiHRjhAuHcs05RI=" crossorigin="anonymous"&gt;&lt;/script&gt;
&lt;script&gt;
$(".toggleProductos").on("click",function(){
&nbsp; &nbsp;const link = $(this);
&nbsp; &nbsp;const productos = link.next();
&nbsp; &nbsp;if(productos.is(":visible")) {
&nbsp; &nbsp; &nbsp; &nbsp;productos.hide();
&nbsp; &nbsp;} else {
&nbsp; &nbsp; &nbsp; &nbsp;$.get(location.href).done((page) =&gt; { // $.get is a shortuct of $.ajax to... get...
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; const newSetOfProductos = $(".toggleProductos:first", page).next();
&nbsp; &nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp;productos.replaceWith(newSetOfProductos);
&nbsp; &nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;&nbsp;link.next().show();
&nbsp; &nbsp; &nbsp; &nbsp;});
&nbsp; &nbsp;}
});
&lt;/script&gt;
&lt;/body&gt;
&lt;/html&gt;
</code></pre>
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<a href="https://agendar.com.mx/divrel1.asp#" rel="ugc">https://agendar.com.mx/divrel1.asp#</a> opens and closes with the asp Ihave no reloading thougn (my original code) <a href="https://agendar.com.mx/divrel.asp#" rel="ugc">https://agendar.com.mx/divrel.asp#</a> with your last code doesnt open and close. it is not running the asp script &lt;div&gt; 
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jquery.slim ? maybe start using a full version before trying to optimize also I don't see products loaded in the page by default so there's no way the browser can show something that doesn't exists in the page, right ?
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The browser sown an as with a random number as shoen in <a href="https://agendar.com.mx/divrel1.asp#" rel="ugc">https://agendar.com.mx/divrel1.asp#</a>&nbsp; The actual asp script &nbsp;is prettuy long: <pre><code class="code-10 nolinks" id="code-20-43292945-1">&lt;div style="display:none;text-align:left;"&gt;
&lt;%Dim My_StringP
Dim My_ArrayP
sql="select productos from respuestas where id=" &amp; respuestas(11,record)
Set RespSet = Server.CreateObject("ADODB.RecordSet")
RespSet.Open sql, cn
productos=RespSet("productos")
respuestas(10,record)=productos
My_StringP= respuestas(10,record)
if isnull(My_StringP) then
My_StringP=""
end if
if not instr(My_StringP,"#")&gt;0 then
My_StringP="#;" &amp; My_StringP
end if

My_ArrayP=split(My_StringP,";")
'response.write UBound(My_ArrayP)
TodProd=UBound(My_ArrayP)
TotIndPro=(TodProd) * 2
IF TodProd mod 2 &gt;0 &nbsp;then
TodProd=TodProd-1
end if
NumPr=0%&gt;

&nbsp; &nbsp;&lt;table cols="4" align="center"&gt;
&nbsp; &nbsp; &nbsp;&nbsp;&lt;%For Each item In My_ArrayP
&nbsp; &nbsp; &nbsp;&nbsp;Dim My_ArrayIP
&nbsp; &nbsp; &nbsp;&nbsp;My_StringIP= item
&nbsp; &nbsp; &nbsp;&nbsp;My_ArrayIP=split(My_StringIP,"#")
&nbsp; &nbsp; &nbsp;&nbsp; %&gt;
&nbsp; &nbsp; &nbsp;&nbsp;&lt;tr&gt;&lt;td &nbsp;valign="top" style="white-space:nowrap;"&gt;

&nbsp; &nbsp;&lt;%for Each itemI In My_ArrayIP%&gt;
&nbsp; &nbsp;&lt;%NumPr=NumPr+1
&nbsp; &nbsp;'response.write NumPr &amp; "NP&lt;br&gt;"

&nbsp; &nbsp;ColName= NumPr mod 4
&nbsp; &nbsp;'response.write ColName &amp; "CN&lt;br&gt;"

&nbsp; &nbsp;select Case ColName
&nbsp; Case 0
&nbsp; &nbsp;size= 10
&nbsp; &nbsp;placeholder="Precio"
&nbsp; tipo="text"
&nbsp; &nbsp;Case 1
&nbsp; &nbsp;size=2
&nbsp; &nbsp;placeholder="Cotizar"
&nbsp; tipo="checkbox"
&nbsp; &nbsp;Case 2
&nbsp; &nbsp;size=20
&nbsp; &nbsp;placeholder="Producto"
&nbsp; &nbsp;tipo="text"
&nbsp; &nbsp;Case 3
&nbsp; placeholder="Cantidad"
&nbsp; &nbsp;tipo="text"
&nbsp; &nbsp;size=5

&nbsp; &nbsp;end select
&nbsp; &nbsp; 'response.write size &amp; "SZ&lt;br&gt;"
&nbsp; &nbsp; %&gt;
&nbsp; &nbsp; &lt;%if ColName=1 then%&gt;
&nbsp; &nbsp;&nbsp; &nbsp; &lt;%if itemI="on" then%&gt;
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;input type="&lt;%=tipo%&gt;" name="producto&lt;%response.write(NumPr)%&gt;&lt;%response.write(respuestas(11,record))%&gt;" checked placeholder="&lt;%=placeholder%&gt;" size="&lt;%=size%&gt;"&gt;
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;%else%&gt;
&nbsp; &nbsp; &nbsp;&nbsp; &lt;input type="&lt;%=tipo%&gt;" name="producto&lt;%response.write(NumPr)%&gt;&lt;%response.write(respuestas(11,record))%&gt;" placeholder="&lt;%=placeholder%&gt;" size="&lt;%=size%&gt;"&gt;
&nbsp; &nbsp; &nbsp;&nbsp; &lt;%end if%&gt;
&nbsp; &nbsp; &nbsp;&nbsp; &lt;%else%&gt;
&nbsp; &nbsp; &nbsp;&nbsp; &lt;input type="&lt;%=tipo%&gt;" name="producto&lt;%response.write(NumPr)%&gt;&lt;%response.write(respuestas(11,record))%&gt;" value="&lt;%=itemI%&gt;" placeholder="&lt;%=placeholder%&gt;" size="&lt;%=size%&gt;"&gt;
&nbsp; &nbsp; &nbsp;&nbsp;&lt;%end if%&gt;
&nbsp; &nbsp; &nbsp; &nbsp;&lt;%next%&gt;

&nbsp;&lt;/td&gt;&lt;/tr&gt;
&nbsp; &nbsp; &lt;%next%&gt;
&nbsp; &nbsp; &lt;tr&gt;&lt;td align="center"&gt;&lt;input type="submit" &nbsp;name="guardarn&lt;%response.write(respuestas(11,record))%&gt;" value="Guardar"&gt;&lt;/td&gt;&lt;/tr&gt;
&nbsp;&lt;/table&gt;
&nbsp;&lt;%randomize%&gt;
&nbsp;&lt;input type="hidden" name="random" value=""&lt;%=rnd%&gt;"&gt;
&nbsp;&lt;input type="hidden" name="NumProd" value="&lt;%=NumPr%&gt;"&gt;
&nbsp;&lt;input type="hidden" name="id" value="&lt;%=respuestas(11,record)%&gt;"&gt;
&nbsp;&lt;input type="hidden" name="idpass" value="&lt;%=idpass%&gt;"&gt;&lt;br&gt;

&nbsp;&lt;/div&gt;


</code></pre>
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<div>
you're still using jquery.slim...&nbsp;
</div>

<div>
Using jquery-3.6.0.js &lt;script src="<a href="https://code.jquery.com/jquery-3.6.0.js" rel="ugc">https://code.jquery.com/jquery-3.6.0.js</a>" integrity="sha256-u7e5khyithlIdTpu22PHhENmPcRdFiHRjhAuHcs05RI=" crossorigin="anonymous"&gt;&lt;/script&gt; No open or close 
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<div>
remove it or pick it from your source
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Removed but open close link does not reload. Here is the code <pre><code class="code-10 nolinks" id="code-20-43293229-1">&lt;html&gt;
&lt;body&gt;
&lt;%rec=1%&gt;
&lt;form method="get" name="nuevo&lt;%=rec%&gt;" action="nuevo.asp" target="MyIFrame"&gt;
&nbsp;&lt;a href="#" class="toggleProductos toggleProductos&lt;%=rec%&gt;"&gt; Open / Close &lt;/a&gt;
&lt;div style="display:none;text-align:left;"&gt;
&lt;%randomize
response.write rnd%&gt;
&lt;/div&gt;
&lt;script src="https://code.jquery.com/jquery-3.6.0.js" &nbsp;crossorigin="anonymous"&gt;&lt;/script&gt;
&lt;script&gt;
$(".toggleProductos").on("click",function(){
&nbsp; &nbsp;const link = $(this);
&nbsp; &nbsp;const productos = link.next();
&nbsp; &nbsp;if(productos.is(":visible")) {
&nbsp; &nbsp; &nbsp; &nbsp;productos.hide();
&nbsp; &nbsp;} else {
&nbsp; &nbsp; &nbsp; &nbsp;$.get(location.href).done((page) =&gt; { // $.get is a shortuct of $.ajax to... get...
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; const newSetOfProductos = $(".toggleProductos:first", page).next();
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;productos.replaceWith(newSetOfProductos);
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;link.next().show();
&nbsp; &nbsp; &nbsp; &nbsp;});
&nbsp; &nbsp;}
});
&lt;/script&gt;
&lt;/body&gt;
&lt;/html&gt;


</code></pre>
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<div>
It does but reloading the page not clicking on the open/close link ​<a href="https://agendar.com.mx/divrel.asp#" rel="ugc">https://agendar.com.mx/divrel.asp#</a>​​​ 
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<div>
<video class="fr-draggable" controls="" src="https://filedb.experts-exchange.com/incoming/2021/05_w22/1561998/test.mp4" style="width: 600px;">Your browser does not support HTML5 video.</video>
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test.mp4

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maybe a cache issue, so replace :<pre><code class="code-1 nolinks" id="code-20-43293318-1">$.get(location.href)
</code></pre>by <pre><code class="code-1 nolinks" id="code-20-43293318-2">$.get(location.href.replace(/#/,"?nocache="+new Date().getTime()))
</code></pre>
</div>

<div>
Thx but somthing is not right. Made the change to no avail $(".toggleProductos").on("click",function(){ &nbsp; &nbsp;const link = $(this); &nbsp; &nbsp;const productos = link.next(); &nbsp; &nbsp;if(productos.is(":visible")) { &nbsp; &nbsp; &nbsp; &nbsp;productos.hide(); &nbsp; &nbsp;} else { &nbsp; &nbsp; &nbsp; &nbsp;$.get(location.href.replace(/#/,"?nocache="+new Date().getTime())).done((page) =&gt; { // $.get is a shortuct of $.ajax to... get... &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; const newSetOfProductos = $(".toggleProductos:first", page).next(); &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;productos.replaceWith(newSetOfProductos); &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;link.next().show(); &nbsp; &nbsp; &nbsp; &nbsp;}); &nbsp; &nbsp;} });
</div>

Manager

Roberto Parker

<div>
<div class="content wysiwyg-content fr-view">
I have a script: <pre><code class="code-10 nolinks" id="code-10-29216639-1">&lt;html&gt;
&lt;body&gt;
&lt;%rec=1%&gt;
&lt;form method="get" name="nuevo&lt;%=rec%&gt;" action="nuevo.asp" target="MyIFrame"&gt;
&nbsp;&lt;a href="#" class="toggleProductos toggleProductos&lt;%=rec%&gt;"&gt; Open / Close asp&lt;/a&gt;
&lt;div style="display:none;text-align:left;"&gt;
&lt;%randomize
response.write rnd%&gt;
&lt;/div&gt;
&lt;script src="https://code.jquery.com/jquery-3.6.0.slim.min.js" integrity="sha256-u7e5khyithlIdTpu22PHhENmPcRdFiHRjhAuHcs05RI=" crossorigin="anonymous"&gt;&lt;/script&gt;
&lt;script&gt;
$(".toggleProductos").on("click",function(){
&nbsp; &nbsp;$(this).next().toggle();
});
&lt;/script&gt;
&lt;/body&gt;
&lt;/html&gt;
</code></pre> It opens and closes de Div. how can I forece the div to reload the asp code? For example to make randomize to actually run and refresf rnd
</div>
</div>

I have a script:
<html>
<body>
<%rec=1%>
<form method="get" name="nuevo<%=rec%>" action="nuevo.asp" target="MyIFrame">
 <a href="#" class="toggleProductos toggleProductos<%=rec%>"> Open / Close asp</a>
<div style="display:none;text-align:left;">
<%randomize
response.write rnd%>
</div>
<script src="https://code.jquery.com/jquery-3.6.0.slim.min.js" integrity="sha256-u7e5khyithlIdTpu22PHhENmPcRdFiHRjhAuHcs05RI=" crossorigin="anonymous"></script>
<script>
$(".toggleProductos").on("click",function(){
   $(this).next().toggle();
});
</script>
</body>
</html>
It opens and closes de Div. how can I forece the div to reload the asp code? For example to make randomize to actually run and refresf rnd

Reload a div when opened

Active Server Pages (ASP) is Microsoft’s first server-side engine for dynamic web pages. ASP’s support of the Component Object Model (COM) enables it to access and use compiled libraries such as DLLs. It has been superseded by ASP.NET, but will be supported by Internet Information Services (IIS) through at least 2022.

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

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.

JavaScript

Asynchronous JavaScript and XML (AJAX) is a group of interrelated Web development techniques used on the client-side to create asynchronous Web applications. With AJAX, web applications can send data to and retrieve from a server asynchronously (in the background) without interfering with the display and behavior of the existing page. HTML and CSS can be used in combination to mark up and style information. The Document Object Model (DOM) is accessed with JavaScript to dynamically display and allow interaction with the information presented.