Node.js Crash Course Tutorial #8 - Middleware

In this node.js tutorial we'll talk about what middleware is & how we use middleware in node.js applications using the use( ) method.
0:00 -- what is middleware?
5:40 -- using next( )
8:20 -- 3rd party middleware
11:31 -- static files
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Hi! Do I need to install Nodemon, Ejs, and other third party packages every time I start a project?

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@@ahmedlabeeb2969 It depends on the project. I don't know what you want to build. Depending on the ideas you have, your project might need many third party packages, or none. Nodemon is good to have because it keeps track of the changes you make to your code and automatically restarts the server, that way you don't have to be constantly shutting down and turning on the server every time you change a line of code. Does a project need it to work? No, but it sure is helpful. EJS is a view engine that allows you to do server-side rendering. Basically you build your html on the server and then send it to the client's browser. It also gives you many features to build your pages. You can check its documentation to learn more. Again, the only one who knows what packages your project needs, it's you :).

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@@NetNinja Hi! Great Video. Do I need to install Nodemon, Ejs, and other third party packages every time I start a project?

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@@ahmedlabeeb2969 If You Have Installed these packages globally like --g then you don't have to install them again and again But if you don't have done them globally you have to setup your npm and Install them in the Project Although it is your wish what you wanna do

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Shaun, you're one of the best teachers I've come across. Words aren't just enough to express how grateful I am for coming across your channel. You're an amazing teacher and you'll definitely go very far.

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Honestly understood the middle ware concept clearly than before thank u Shaun!!

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That means a lot :) thanks for watching!

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Now i can say "What middle ware is".. You r an amazing teacher Shaun!

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This was a very well done tutorial. Thanks!

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Hi! Do I need to install Nodemon, Ejs, and other third party packages every time I start a project?

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i try to understand middleware by taking many videos but it not works. but now i understand after watching your video lec. thanks you are super

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Pretty often, for a French guy like me, we can be pretty afraid of programming jargon. When we speak about some terms like "Middleware", we think about something very technical, until someone explain that it's a simple/useful concept to apply. In any case, thank you for all the stuff you vulgarize. About view engine and static file (for CSS), I was already looking for clues/solutions by myself, so I didn't really need this new information. Even if I was pretty rough in my last comment, it was because I preferred something cleaner (Liquid) for my view engine than what you proposed.

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Hi! Do I need to install Nodemon, Ejs, and other third party packages every time I start a project?

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@@ahmedlabeeb2969Yes but if you don't want than you can install packages globally so that all the node. js application on your computer can import and use the installed packages

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Hi! Do I need to install Nodemon, Ejs, and other third party packages every time I start a project?

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Ahmed Labeeb, nodemon can be installed once globally but other packages needs to be installed per project Happy coding :)

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Great one Thanks. One question please. is the Static middle ware needs to be on top before the Routes? Cheers

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great tutorial, I am learning a lot from it! everything was going good until now I got a problem installing morgan, a nertwork problem, any solution for that? do I need morgan to keep it going?

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Try npm install morgan --force

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@@TheJojoboy12 Thank you for your suggestion, I ended up finding out that it is a 'cache' problem and I need to clear cache and restart VScode to be able to install anything again, it happens every so often

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Best tutorial.....

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Excellent tutorials no doubt. Thanks NINJA. I have a question. To let express know about my static files I used the 'public' folder [ app.use(express.static('/public'))] but this did not work until I changed to [app.use(express.static(__dirname + "/public"));] . Is there a difference? I thought it's the same thing!

[@NetNinja]

Hey, the path is relative to your app.js file where you launch your node process. So if your public directory is in a different location to your app.js file, then you will need to build the absolute path using __dirname. Otherwise, you can just use use 'public' (no need to use '/' before it either). Hope this helps.

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...tnx 🙏🏾

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Well Explained

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What are the typical types of files we that we should keep in the public folder?

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Awesome tutorial btw! Helps alot for beginners like me 👍🏽👍🏽👍🏽

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Thank you Net Ninja

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im looking forward to auth :)

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why didn't you use next() command in express.static() middleware?

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superbe!!! really amazing!

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can u share some videos about nodejs with mongodb and a lot of thanks for ur hard work ♥

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How did they use to do when express didn't exist and they wanted to include static files ?

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Awesome

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ty.

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yeah very very nice tutorial

[@cafe-tomate]

Hi Shawn, Can we do the same thing (calling next() ) in non-express server ? Like the ones of the first videos

[@CaliburPANDAs]

How come you don't need to include next() in thirdparty middlewares? 11:19

[@saad_o_6101]

When you define logger middleware you say after executing that code it does not know how to proceed further and then next() comes in but at beginning of video you say it runs from top to bottom so why it doesn't run from top to bottom after executing logger middleware without next function at #5:40

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amazing my friend

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You are great man, thanks for your efforts.

[@limitless003]

Thanks a lot

[@cafe-tomate]

The res[content-length] argument of morgan is supposed to be the length in bytes of the file's body. Why does it shows --- in the screen of the tutorial?

[@ZTF666]

@5:37 i see what you did there hahahaha !

[@JagTheRipper]

Hi I am currently stuck in my project. I want to server static css, img, js files to the client on the browser, I followed your steps exactly but keep on getting this error: mime type is not executable

[@ibrahims5457]

Am a bit late this time...btw still awesome content...!

[@ahmedlabeeb2969]

Hi! Do I need to install Nodemon, Ejs, and other third party packages every time I start a project?

[@ibrahims5457]

@@ahmedlabeeb2969 it really depends on what you want to do.... Nodemon is used to speed up the process and EJS ( or other templating engines ) are used when you wanna do server-side rendering. Hope that helped. ☺️

[@ahmedlabeeb2969]

@@ibrahims5457 Thanks man!

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Thanku so much 😋

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Thank you unmeasurably! what program do you use for your slides ?

[@NetNinja]

Hey, I mainly use Adobe XD.

[@theartist8835]

@@NetNinja thanks 😁 your representations are very helpful in understanding the concept. Keep on using visuals 😬