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Blazor: how to include javascript-package, which is installed with Nuget-Package-Manager?

I'm afraid this will be a stupid question. But I don't manage it to use my JS-Package (for example jQuery), which i have installed with Visual Studio Nuget-Package-Manage in my .net 5 Blazor Server-App.
What i did:
Installing the Package. Here I installed jquery.datatable which includes jQuery itself:
Image of my Project
But now, i don't know how to include it for example in my "_Host.cshmtl"-File:
<script type="text/javascript" charset="utf-8" src="???WHERE IS IT????"></script>
Where is my *.js-File? For example: query.dataTables.js ??
I found it on "C:\Users\xxxxx.nuget\packages\jquery.datatables\1.10.15" and
"C:\Users\xxxxxx.nuget\packages\jquery\1.7.0"
Do i realy have to copy it to my wwwroot-Folder manualy?
If so, why i should use the package-manager?
Thanks for your help!!

Traditional web applications using JavaScript normally load the file from a local folder or from a web CDN (e.g. CDNJS.com etc). This is then loaded from the page (often referenced from a layout file).
Early on it used to be the case that JS libraries could be loaded via NUGET packages but this approach is now discouraged. It had to fix the creation of the script in a set location, e.g. /Scripts and there was no flexibility. Almost all client-side libraries are now in NPM as packages or on CDNs like cdnjs.com.
The current approach for .NET web apps to load client-side assets is either use LibMan or NPM and have some sort of webpack arrangement to compile/pack/copy. You would never load the JS from a /packages folder in the way you suggested.
Blazor Approach
Blazor (since .NET 5.0) can load either embedded JS modules (from your code), or from a URL directly.
If you want to package some JS with your application you should look at Razor Component libraries. This allows static assets such as JS files to be embedded in the code, which Blazor makes available via the _content route, e.g.
_content/LibraryName/myfile.js.
Because Blazor is a SPA you don't include JavaScript using a <script> tag in your HTML, you should load it as a module and reference it there.
This documentation explains it:
https://learn.microsoft.com/en-us/aspnet/core/blazor/call-javascript-from-dotnet?view=aspnetcore-5.0#blazor-javascript-isolation-and-object-references
DataTables, JQuery
So should you include jquery.min.js and jquery.datatables.min.js in your library? I'd suggest a better approach is to load from a CDN - your package is smaller and there is a chance the URL is already cached and loaded, e.g.
var module = await js.InvokeAsync<IJSObjectReference>(
"import", "https://cdnjs.cloudflare.com/ajax/libs/datatables/1.10.21/js/jquery.dataTables.min.js");
This loads the module on-demand from the URL directly. You'd also need to load jquery before this.
Finally I'd make this observation: are you sure you want to go down this route?
There are several native Blazor libraries on NUGET for rendering and handling tables. You'll find it much easier to go this way rather than try to patch jquery-based libraries into a Blazor app.

I had a similar issue. Not with the same libraries, but I was wanting to do something that wasn't available in a Blazor library yet. I needed a video player that could handle a certain format that the default HTML 5 video element can't handle. There is an open source player, videoJS , that did the job, but it's a javascript library. It's available on npm and there are cdn's - however the plugins (as far as I could tell) weren't on CDN - so I had to go down the npm route.
When you install an npm package it puts it into a hidden node_modules folder. Unfortunately even if you point to that path or even copy the file in with your other js files it won't work. Npm packages are designed to be run by nodejs, rather than directly in the browser. In order for them to run in a Blazor app (in the browser) you have to do an intermediary step of transpiling it into a browser friendly format.
What I really wanted was a re-usable component, that wrapped the javascript.
It took me a while to get there but I finally figured it out. I've written a series of articles on my blog detailing it. The final one ports everything into a Razor Class library that can be consumed with no knowledge of the underlying js. The fourth article deals with importing npm libraries and using them within a web assembly app. I'll put the link below but essentially the process is:
Create a folder eg JS and initialise it for npm (npm init -y)
Install the required npm packages (npm install --save)
Create a src folder within the JS folder that that you will put your own js files in
Create an index.js file in src that imports the required javascript modules and exports what you want to consume
Install snowpack (npm install snowpack --save-dev) (or webpack but I found snowpack seems to work better)
Configure snowpack to process the contents of the src folder into wwwroot/js (without snowpack or similar the files in the npm package won't be in a browser or blazor useable format)
use javascript isolation to pick up your index.js file from wwwroot/js
See blog post here for full details (It's part 4 of a 5 part series - part five puts it all in a razor class library so you can add it to a project without ever seeing the javascript)
I know this is late but this SO question was one I kept coming across when searching on how to do what I wanted, so thought I'd put my solution here in case it helps anyone else searching for what I did.

ASP.NET MVC bundle working on local but not in server

I am trying to use the bundles feature in ASP.NET MVC in my project, everything works great in my local, if I switch the compilation debug property to false I can see that the bundle is being generating with a version (v=XXXXXXX) and my application keeps working.
When I deploy the application to a server and request the page, the bundle is there but the v= value is empty. Is there anything I am missing?
<script src="/bundles/bundlename?v="></script>

One of the possible cases you have is with optimization side of bundles. I had the same issue with my scripts and styles when I started to use minified versions. For example, if I specified in bundle configuration with .min.js file then you can fall into problem when optimization framework minifies already minified script(s). And it also occurs only in release mode. I solved it with BundleTable.EnableOptimizations = false; in BundleConfig.cs file after all bundles' configs

I think you miss specific root path since locally its not the same vs server side.
Why don't you use the script helper from the framework:
#Scripts.Render("~/bundles/bundlename")

I found the issue, after trying everything I went back an check the build scripts on the TFS server, we have continuous integration configured, turns out the build server was removing the .js and only letting the .min.js files on the final build. I removed that instruction and it started working.
Basically the .js did not exist on the server so there was nothing to bundle.
Thank you guys for your help!

Debug JavaScript code in Visual Studio bundled with WebPack

I'm new to JS development and experience issues with debugging JS code in Visual Studio 2013. JS part of our web app is bundled into a single app.bundle.js file by WebPack, this file is automatically updated everytime any js file changes (we use special watch script which uses npm).
I'm able to debug JS code using Chrome and debugger; derecitve. It shows correctly mapped file under such kind of paths "webpack:///./Scripts/". It means that WebPack creates mapping correctly. But I'd like to debug directly from VS using Call Stack, break points, etc.
Any ideas?
Thanks in advance!

There is a a series of ongoing issues with Debugging webpack bundles Visual Studio. Depending on your webpack configuration and your dependency versions, this Webpack plugin may work for you. Be sure to check out the issues where can you see the ongoing conversation. If you are doing anything with Babel / ES2015+, you probably will want to upgrade to Visual Studio 2015 for syntax support.

VS2013: Publish minified bundle created on files outside of the project

I use Visual Studio 2013 and .NET 4.5 for an MVC project.
I've learning to use AngularJS via several videos on Pluralsight and one of them walks through the process of using Grunt to clean the output directory, then use ngmin to min-safe the Javascript files.
My process is using a gruntfile.js to clean and run ngmin against the javascript files in my solution, then put them in a directory called app_built. This is executed via a batch file in the pre-build for the project and then I include it via a ScriptBundle with IncludeDirectory pointing to the app_built directory. My intent is to use the Bundling features of .NET 4.5 to do the rest of the minification and concatenation of the Javascript after all the files have been min-safed via Grunt.
I specify the path to the min-safed files with the following:
bundles.Add(new ScriptBundle("~/bundles/minSafed")
.IncludeDirectory("~/app_built/", "*.js", true));
If I run this on my local machine, it runs fine without a hitch. The Javascript is minified and bundled as I'd expect and the resulting web application runs fine as well.
If I publish the website to a remote server, I get a server error that the "Directory does not exist. Parameter name: directoryVirtualPath". I assume this error is saying that it's unable to find the directory populated with my many *.js files. I also assume this is because they weren't published since they aren't part of the solution, even though the folder they reside in is a part of the solution (it's just empty within the solution explorer in Visual Studio).
If my assumption is correct, what can I do to add these files to my solution so they'll be published with the rest of my web application with minimal effort on my end each time?
And if I'm incorrect in the assumption, what I can I do to resolve this otherwise?
Thanks!

I never did find a great way of going about this. I found information at http://sedodream.com/2010/05/01/WebDeploymentToolMSDeployBuildPackageIncludingExtraFilesOrExcludingSpecificFiles.aspx that seems related, but I was unable to make it work.
Rather, since I knew the name of the outputted file, I simply created such an empty file in my project and referenced that where I needed to. I then had the pre-build task replace the contents of that file with the externally minified version and it would be packaged with the project as necessary, so it works well enough.

Web Essentials, command line utility to bundle script files?

I'd like to start bundling our javascript files. I've found that it's really easy locally using the web essentials plugin, however I need to set up the build server to generate the bundled .js file.
I'd rather not check this generated file into TFS as it will cause conflicts for our developers, and also since it's generated from the source I feel that the server build should generate it.
Is there a command line utility for doing the script bundling outside of visual studio that could be used as part of a build script? My google-fu is failing to find one.
Many thanks,

As long as you wrote it as proper AMD modules, require.js comes with a tool to turn all your files into an optimized bundle.