Javascript Nuggets - Callback Functions

[@Shivertehtimbers]

The best teacher on youtube.

[@СветланаЕременко-т4з]

Hi John! Thanks for all your lessons here on KZbin. I've watched a lot of them and I enjoy your way of teaching so much! When I need to cover a new topic, at first I check the content of your channel. I've found my incredible teacher. With love from Ukraine💙💛

[@CodingAddict]

Glad you enjoy the content !

[@LiquidMasti]

keep the nuggets coming its informative .

[@eulerthegreatestofall147]

This is great!, It is the first time seeing so well explained the famous callback function concept!

[@benlongo6480]

Thanks John, it's always a pleasure watching your videos

[@olivecliste9216]

John is my best online programming teacher. Thank you so much john.

[@arcadan]

Man this is gold.. thank you

[@male3399]

Very helpful approach

[@charujain4308]

Thank you for this great video. I finally learned what callback is..

[@lamb8086]

I didn’t need to watch the video but wanted to give you the view. But I actually did learn something...I didn’t know the console still printed out the same input on separate lines when you kept clicking button haha I thought the new thing was it just showed how many times it was pressed until you logged something new

[@hardikthaker5364]

Please explain closures as addition to this...

[@isacvarghesek7010]

Man you are awesome... Thanks for the help

[@marcoonlinetv7769]

Promises are next on the list

[@emanueleraggi272]

Hey John, thanks for all your work both here and for the amazing courses you publish on udemy! You are the best! I have a question: do you foresee to do some courses on unit testing? Or maybe a dedicated course on unit testing? or reuse existing courses for unit testing?. Thanks for all your work!!

[@CodingAddict]

Hmm. Very unlikely, really busy with updating the current content.

[@emanueleraggi272]

Gotcha! Thanks John!

[@ujolmaharjan2010]

Thanks john

[@spatialnasir]

Thanks so much.

[@themodernmonk7]

Callback function was always confusing me so much. Now I am clear with callback function concept. Thanks Sir.

[@CodingAddict]

Glad it helped :)

[@blankomog]

Thank you sir! Really enjoying this playlist. How are you able to zoom in and zoom out on your screen? Any special screen recording software?

[@CodingAddict]

Thank you for your support. Nope, just straight up Mac zoom feature.

[@blankomog]

@@CodingAddict I appreciate the feedback. Thanks.

[@codex8797]

Nice bro.

[@calvitocalvon1711]

should i do the node and express tutorial before the react tutorial?

[@CodingAddict]

It depends. If you are looking for front-end content then React, if backend then Node.js

[@calvitocalvon1711]

@@CodingAddict i want to be fullstack and i think im familiar enough with html css and intermediate js, but i dont know stuff like the document.query selector and such, in the end i will watch both but where should i start? Also papa john replied to my message feelin blessed 😍

[@balutaalex6694]

Was wondering what editor and plugins do you use, the auto-reformatting blew my mind

[@CodingAddict]

Hello, Yes I use built in prettier extension (but I believe it comes as default now) and I added this code in settings.json { "editor.formatOnPaste": true, "editor.formatOnSave": true, "editor.defaultFormatter": "esbenp.prettier-vscode", "[javascript]": { "editor.defaultFormatter": "esbenp.prettier-vscode" } You can find my entire setup here github.com/john-smilga/VS-CODE-SETUP

[@balutaalex6694]

@@CodingAddict Thank you for the quick reply and for the tutorials.

[@tramparse84]

In line 19, does 'value' equal 'fullName'? Is that what the callback function is having passed into it?

[@CodingAddict]

yes

[@joelexperienced]

many thanks 🔥✌🤙☺😍

[@tunamusic2314]

do you have course on react js , udemy ? share me the link, i'd like to register

[@loydcose2780]

Thank you for not including arrow function, as a beginner its confusing.

[@ozankurucu6261]

Thanks!

[@CodingAddict]

No problem!

[@ozankurucu6261]

​@@CodingAddict I follow you for a long time, I have learned lots of things from you. You deserve a big thanks!

[@prudhvichinnam1488]

Super videos do like this only 🔥🔥❤️❤️❤️❤️

[@anuragkaushik2447]

Never understood callback before

[@AaronM]

sorry, dumb question, but what is the purpose of this? i'm still learning, but if the callback is defined in the file (or i presume imported from another module) you can also just call it from within another function without explicitly passing it in as an argument. makeUpperCase and reverseString don't need to be passed in as args of handleName. again, sorry, I'm just trying to wrap my head around why you'd want to do this. update: i guess maybe i wrote the above too soon, cuz it looks like my question is kind of answered with the button example, where you're not defining the logic. I'm coming from more of a Node point of view, rather than browser point of view, or something, where you'd write out all the logic yourself? Is there another real world example that could help solidify this for me?

[@CodingAddict]

Hmm. Have you ever used map or filter functions?

[@AaronM]

@@CodingAddict I’ve used map in Python, which I imagine is similar in JS. I guess I didn’t consider that since that’s the way that built-in module is written, vs why one would intentionally write with callbacks in mind, but maybe it’s just as simple as, cuz that’s what they want it to do? Sometimes when I write (bad) functions, I’ll call multiple other functions too. So I think I was wondering, if I intend to call them, do I NEED to pass ALL of them in as args, or do I just have the OPTION to pass them as args?

[@CodingAddict]

Yes, as far as building your own functions that take in callback functions, I see what you are saying, often times you can make an argument that it's easier to just code all the login inside of the function. But it's important to understand the general concept, since callback functions are used all over the javascript as well as the node, and many different libraries.

[@AaronM]

@@CodingAddict I agree with you about understanding how it works, and appreciate your responses. I think maybe as I learn more and get more exposure, it will “click.” It may also be that I’m too rigid in my thinking - usually when I write my logic, I tend to write with a specific return in mind, hence my “hard coding” functions inside other functions. But I can at least recognize that by using callbacks, that return can be more fluid/flexible. Either way, I appreciate the response and thanks for the work you’re doing to help teach us.

[@Dineshsharma-ec6ys]

Also make videos on async function and promises.

[@elweonweandolaweafome]