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How to set active TAB /active/color-changed or whatever similar event on the selected TAB

I know it has been explained in many places here but I can't get it to work.
It concerns: how to use JavaScript which is in - under wwwroot created - folder in a *.js file.
What I am using:
Blazor Server App empty (VS2022, C#).
I only need/use Server App in VS2022 C# and empty - without any predefined navbars and other elements. So there are no any *.cshtml files except one which is automatically created while creating a "Blazor Server App Empty" in VS 2022 and that is "_Host.cshtml"
And I don't want to use any other template in VS 2022, only this one mentioned.
So, after creating a "page" using this in VS integrated template, I added following in MainLayout.razor (I am using *razor and only razor - no any cshtml):
// this was originally created as in the template in VS2022
#inherits LayoutComponentBase
//this one also:
<main> #Body </main>
// That is what I added here in MainLayout.razor, it's from this site: [http://jsfiddle.net/Ag47D/3/](https://www.stackoverflow.com/)
<div class="navbar">
<div class="navbar-fixed-top">
<div class="container" style="width: auto;">
<div class="nav-collapse" id="nav-collapse">
<ul class="nav" id="nav">
<li id="home">Home</li>
<li id="skill">Skill</li>
<li id="research">Research</li>
<li id="link">Link</li>
</ul>
</div>
</div>
</div>
</div>
And then I added the css part to the existing "site.css" in that simply VS 2022 project:
`.navbar #nav > .active > a {
color: red;
}`
And finally - and that is the big issue for me to understand WHRE/HOW to handle that . a simply JavaScript part (you can find that on the same site mentioned):
` $(function() {
$('#nav li a').click(function() {
$('#nav li').removeClass();
$($(this).attr('href')).addClass('active');
});
});`
I added that to a created folder in wwwroot, the flder is called: "js" and the file inside that folder is called: "setactivetab.js". In that file is the mentioned part of javascript.
In "_Host.cshtml" I added then that, here the part of that _Host.cshtml where you can see what I added:
`....
....
Reload
<a class="dismiss">🗙</a>
</div>
<script src="~js/setactivetab.js"></script>
<script src="_framework/blazor.server.js"></script>
</body>
</html>`
So I tried with:
<script src="~js/setactivetab.js"></script>
and:
<script src="js/setactivetab.js"></script>
and:
<script src="~/js/setactivetab.js"></script>
But nothing worked. I mean: TABS are shown on the page - no question about that - but if I click on one of that TABs - nothing happens, the color isn't changed.
Somehow I am not able to understand how to use a self created/from google downloaded, JavaScript for simply changing of the color or to set a selected TAB as active/current or however we can use that.
I tried so many examples described on the web. I can't get that working - maybe I am missing/not understood some fundamental knowledge of using a JavaScript. I simply don't know the way how one can use that.
Can you please post me here a working example of a navigation TABS, ideally self created and simply? Important is: WHERE to put a javascript and how to access that properly so the clicking on a TAB wil lchange his color and stay so until I click on another TAB in a simply - if possible: horizontal, not vertical, navigation bar.
I have enough from searching/reading of many web sites descriptions as there works all and if I copy&paste some simply example, it doesn't work.

FAQ page shows answers automatically

I'm trying to create a drop down FAQ page with jQuery and for some reason the answers are showing when I load the page.
I have my jQuery script on my page
<script src="http://code.jquery.com/jquery-2.1.4.min.js"></script>
And my javascript page:
<script src="js/threecatsdesign.js"></script>
My full javascript is this:
$(document).ready(function() {
$("#categories h3").click(
function() {
$(this).toggleClass("minus");
if ($(this).attr("class") != "minus") {
$(this).next().hide();
}
else {
$(this).next().show();
}
$("#image").attr("src", "");
// needed for IE so a placeholder isn't displayed for the image
$("#image").attr("style", "display:none;"); }
); // end click
}); // end ready
My HTML is this code:
<main id="categories">
<h3>What is this site about?</h3>
<div>
<ul id="web_images">
<li>We are a website that holds Photoshop lessons called tutorials. Please read our about me page for more information.</li>
</ul>
</div>
<h3>If you hold contests on the site, how do I enter?</h3>
<div>
<ul id="java_images">
<li>Go to our page called contests in the nav bar and you will need to fill out the form in order to enter.</li>
</ul>
</div><p>
<h3>I have a tutorial I would like to suggest or put up my own. How do I do that?</h3>
<div>
<ul id="net_images">
<li>Please go fill out our contact form and you will be contaced with 24 hours or less on how to proceed.</li>
</ul>
</div>

You need to add some css to hide the questions to begin with.
<style>
.faq-question div {
display:none;
}
</style>
I suggest putting this in a different file, but inline styles like this work for a quick and dirty solution.
You also should wrap each question and answer in a tag like this
<div class="faq-question">
<h3>What is this site about?</h3>
<div>
<ul id="web_images">
<li>We are a website that holds Photoshop lessons called tutorials. Please read our about me page for more information.</li>
</ul>
</div>
</div>
And change your JS to reflect the change in elements.
$(".faq-question").click(

nav going below content on browser resize

I have a strange problem I can't figure out. I'm developing some navigation (that is responsive) independent from the rest of my site, and all is going well, except for one thing. If you load the page at a normal desktop size, the navigation is correctly above the placeholder image. But if you resize the browser window skinnier to where it switches to tablet size, and then resize it wider again, the navigation goes below the placeholder image.
Maybe it's something simple or maybe it's not. I can't figure it out.
My html structure is
<body>
<div id="page">
<div id="wrapper">
<nav></nav>
<section id="content"></section>
</div>
</div>
</body>
So I'm not sure how the content section is getting above the nav, but if you inspect the code and look at the html after doing the resize I describe above, the code becomes
<body>
<div id="page">
<div id="wrapper">
<section id="content"></section>
<nav></nav>
</div>
</div>
</body>
I'm not sure if it's the javascript I'm using or what the deal is that is juggling that and not resetting it. Surely it's not a missing CSS declaration...
EDIT: Resolved! Thanks Chris!

Looking at the code beginning on line #2619, the destroy function expects there to be an element #header, which doesn't exist. Add the element #header as the first element within your #wrapper and the issue will resolve. I'm assuming this isn't your JavaScript, so I wouldn't recommending changing it; instead, adjust your markup to give it what it expects.

Try changing the navigation.js line
a.elt.insertAfter("#content");
to
a.elt.insertAfter("#header");

Content is being loaded successfully via ajax. but not showing

I am playing around with djax when I click an anchor tag the url changes and when I view the page source it also changes but the page itself did not change its contents even if I view the page source it has change up any ideas why?
Here's a snippet of the markup
<body>
<div id="resultContent" class='updatable'></div>
<ul>
<li><a id="thankyou" href="views/thankyou.jsp?menuId=2"
targets="resultContent">Thank You Message</a></li>
</ul>
</body>
When I click that the url changes but the result is not showing but when I view the page source it displays the proper markup(or should I say the markup of thankyou.jsp)
here is the code that Is js code
jQuery(document).ready(function($) {
$('body').djax('.updatable');
});

I've had the exact same problem as you and discovered your question while I was looking for an answer. It may be too late for you but according to your markup I believe you ran into the same problem as me which is actually on the issue-list of the plugins Github site (at least right now).
You need to place your updateable div inside a wrapping div. For some reason exchanging content seems not to work for direct children of body. See https://github.com/beezee/djax/issues/22
So your HTML should look like this
<body>
<div id="djaxWrap>
<div id="resultContent" class='updatable'></div>
<ul>
<li><a id="thankyou" href="views/thankyou.jsp?menuId=2"
targets="resultContent">Thank You Message</a></li>
</ul>
</div>
</body>
While jQuery remains the same
jQuery(document).ready(function($) {
$('body').djax('.updatable');
});

Html rendering closing tags automatically

I am working on a Native mobile application CMS system using client-side technology(javascript via JQuery for the most part) and have implmented a templating system similar to that of ASP.NET.
So suppose I have a navigation control which has a starttemplate, endtemplate and itemtemplate as follows:
<div data-type="navigation" id="navigationControlDemo">
<div data-type="starttemplate">
<ul id="Menu">
</div>
<div data-type="itemtemplate">
<li>[[Text]]</li>
</div>
<div data-type="endtemplate" >
</ul>
</div>
</div>
My problem is the browser as it laods seems to decide to want to fix the html so that the tags are closed "properly" as follows:
<div data-type="navigation" id="navigationControlDemo">
<div data-type="starttemplate">
<ul id="Menu">
</ul>
</div>
<div data-type="itemtemplate">
<li>[[Text]]</li>
</div>
<div data-type="endtemplate" >
</div>
</div>
I've tried some workaround and quick hacks to no avail..
I have tried replacing the "<" ">" with certain characters and then replacing them after load but the problem still occurs.

Your code is not valid html. You can't interleave tags (open it in one place and close it in a completely different place). Tags have to be properly nested.
Valid:
<p>
<ul>
</ul>
</p>
Invalid:
<p>
<ul>
</p>
</ul>
Note that you can't properly indent the second one without it looking "off". Please make sure your html is correct first, then the browser will behave properly.
-update- since you want client-side templating, what you don't want is the (invalid) html to be parsed as html. However, it's obviously also not valid xml, which is what you might want.
What you could do is wrap the content of the secions as CDATA.
<div data-type="navigation" id="navigationControlDemo">
<div data-type="starttemplate"><![CDATA[
<ul id="Menu">
]]></div>
<div data-type="itemtemplate"><![CDATA[
<li>[[Text]]</li>
]]></div>
<div data-type="endtemplate" ><![CDATA[
</ul>
]]></div>
</div>
Now if you would interpret that as xml, the parts within the templates are considered text rather than markup.

Basically, you're asking for a way to force a browser to display malformed, messy tag-soup. Thank God most browsers don't just blindly render that kind of code, because the results would be unbearable and make your page unintelligible all together.
That said, if you view the raw page source, you'll probably see the un-corrected, raw markup. But because the browser can't really render it, the engine steps up to the plate and does its best.
But please, don't waste your time finding a way around this, it's just a feature to help you, not to annoy you. Also: HTML5 has a lot more rules about what is allowed and what is not, and how the browser is expected to deal with invalid markup (in your code: <div><ul></div> is deemed invalid, for example). If you feel up to it, you can look at the W3C specifications for more info on the subject.

You can't have <div> elements as children of a <ul> element.
<ul>s only accept <li> tags as children. Specification
Also, it appears you're nesting the tags incorrectly, here:
<div data-type="starttemplate">
<ul id="Menu">
</div>
You can't close that <div> if the <ul> is still open. That's why the <ul> is prematurely closed.

Instead of having tags such as I used keywords to represent the < and > and then render all the correct html using the templating system and replace those keywords back to , and > and add it to the document afterwards. Annoying syntax in my template tags, but it works the way I need it to.