Reading and Writing Files with Node.js | Node JS Beginners Tutorial

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(00:00) Intro
(00:05) Welcome
(00:15) Overview
(00:33) Use the NodeJS docs
(03:53) How to handle uncaught errors
(04:52) Async example
(06:01) Path module
(10:01) Nested operations
(11:31) Callback hell
(13:32) fsPromises
(16:02) Replace Callback hell with Async Await
(20:09) Readstream for large files
(21.25) Writestream for large files
(22:15) Stream data listener
(23:19) Piping data streams
(25:14) How to check if a file or directory exists

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It's refreshing to see a tutorial where someone mentions documentation they are using. Most of the times it's "let's put this absolutely cryptic line of code here because I said so".

chotabomjvonychi

This course is so underrated, thanks for this Dave!

codewithkin

Super useful.
8 minutes in and you've answered every question I had right now.
(JS noob who installed node for the first time this morning as an alternative to doing everything in dev tools. Been wondering for a while if i could read/write files. Kind of crazy how thrilling it is to be sitting here looking at a list of 20 freshly minted random numbers in a simple ol' text file your tutorial taught me how to create.)
Many Thanks, once again, for sharing your knowledge.
Will be checking out your full node tutorial for sure.

samdavepollard

learning how to handle system files is very useful when dealing with things such as logging, caching, loading/importing external files into the app (maybe exported from Excel as csv) and many other scenarios,

about the uncaught exception (or any similar event available in other languages), I tend to implement it at the final stage in my app development progress so I can immediately notice any exception may occurs (as I forgot to look at the console most of the time),
of course I'll be implementing it once my app functionalities are well tested so any error may occur could be due to unpredictable/Uncontrolled external causes (environment settings, server load/crash, file corruption, etc.. ), at this point it's good idea to log what happened there and maybe report it to the developer,

Thanks Dave for the great work and I hope to see you in the next video

ahmad-murery

Fantastic vanilla Node tutorial. Concise and practical. Thank you, Dave!

tfn

I applied this tutorial to read a JSon file and it worked well! Thank you Dave, you really made this task simple and easy to understand!

arturotrejo

This content is by far the best. Thank you for this labor of love. It's going to change my life.

dorian

Awesome Explanation.. In an easy to understand manner

aamirbinusman

Thanks for the explanation about why it's better to have the use appened file inside the write file function. I've seen it done before but didn't know why it might be useful. I didn't realize append file was capable of writing a new file also; so now it makes sense to have it operate 'after' write file.

TinyMaths