Check out the other videos in the JavaScript Array Methods series: kzread.info/head/PLgBH1CvjOA62PBFIDq55-S6Beivje30A2

@studiorda

3 жыл бұрын

how this part work if(count[item]) { count[item]++; } else { count[item] = 1; }

@charafeddineberahmoune9370

9 ай бұрын

​@@studiorda😅

For anyone else like me who didn't understand the last Object loop: The last part if (count[item]) is true if the object has a property and then it goes to the condition of incrementing the property value ++. If it is false then it's assigned that property with the value 1.

@chellaack1644

3 жыл бұрын

bro i have not understood,here what is let count how empty object declaration will acess that array,

@fahadzakir6397

3 жыл бұрын

@@chellaack1644 so let count like you said is an empty object declared just like you would do with an empty variable. Let’s say we have an object called sampleObj with “name” as a property. You can access it like this: sampleObj[“name”] and a way to give this sampleObj property “name” a value is like this: sampleObj[“name”]=“Tom”

@fahadzakir6397

3 жыл бұрын

So In the video, in the if else, it first checks to see if the count empty object has the letter ‘a’ as a property, so count[‘a’] (first-loop) is undefined then it goes to the else condition and gives assigns that property with a value of 1. So we now have count{a:1} The second time it runs across the letter ‘a’ in the loop, it now exists with the value 1 so it tells it to increment that value ++ thus making count{a:2} and then keeps looping and adding, properties and values. Hope this makes sense :)

@joaobertuga3601

2 жыл бұрын

@@fahadzakir6397 Legend!

@jaisharma8056

2 жыл бұрын

@@fahadzakir6397 thank you so much fahad zakir

This helped me to build a solution for returning a max char from an array. Thnx for this tutorial and whole playlists.

Just found your tutorials, easy to understand, Thank you.

@FlorinPop

4 жыл бұрын

Happy to hear that 😃

Multiple uploads and they are all very clear and concise.

@FlorinPop

4 жыл бұрын

I’m happy you like them! ☺️

Thank you Sir, your tutorial is very clear and show that we can use the method in different way, thank you so much Sir

Hi Florin, thanks for the good job you are doing. does ForEach also work like .reduce?

Nice break down currently in a boot camp and this will definitely be of use

JS daily pill! Keep up the good work! 🙏

Thank you for all your videos!

I am not gonna miss this !!!

thank you very much for this very clear explanation! it really helped me a lot!!!

Nice explainer, buy how you using vscode terminal to output those javascript code?

How you using vscode terminal to output those javascript code?

thank you for this great explanation

Hi, thanks for a great tutorial and I have a small question. How can I get the same result in the terminal - I mean without an unnecessary code (like: $ node "c:\Users\thomas\Desktop\Exercises\script.js"), only pure result, like on your video. Regards, Thomas.

love this topic, thank you so much

this kind of videos are the best when u are beginner, thank u

@FlorinPop

4 жыл бұрын

Happy to hear that!

I am thankful to you. Great video.

quick and good explanation 👍

Hi Florin, thanks for your great tutorial. In the end of the video, inside the if parentheses, it's only count[item], normally inside if parentheses would be conditions with comparison operators, so I'm not quite understand what does if (count[item]) stands for, could you explain more for this ?

@blackpurple9163

Жыл бұрын

It means if the item (element in the array) exists, then execute the if statement, we can't leave if ( ) empty, it'll throw error, and since count is an empty object, we can use dot notation or bracket notation to access object's inner keys, so it can be count.item or count[item], both should work

Thanks so much!

hey florin, i'm new in javascript n i want to become expert in javascript, i have seen first lecture on array on youtube and this is you, you have done a wonder full job, very easy understandable code, now i'm thinking i should follow the whole this video series..! keep going like this

@rpralica

2 жыл бұрын

If You want to be js expert take course from Jonas Smedthmann "The Complete JavaScript Course 2022: From Zero to Expert! " .This is great course belive ne

Thank you for the great video!

Really a massive I am in your fan!

can you tell me how is your output is showing in the terminal

please , what addon i have to install to run JS in VS code?

very good content theacher !!! thaks

You are the BEST... That's the fact

Thank you so much!!!

You Are Amazing Thank You A Lot

really good!

Thanks!

Me gusto el Tutorial mano!

hey pls help me.... i dnt understand the let count={} and how the count[item]++ works ?

I am not getting my console.log value in terminal. How can I get my values displayed in the terminal?????

Thanks for the Tutorial. But please can I send you forEach code I wrote that won't work at all? Maybe you can show me what am doing wrong.

Is there a similar tutorial that would help me decode a json file, perhaps using php?

@FlorinPop

4 жыл бұрын

I don’t know PHP :/

Hi, how about a bit deeper dive of why async won't work inside forEach. I just know the fact but would like to know the explanation from you

@samcodes2912

3 жыл бұрын

very true

thank you for this tuto , how can i use the terminal like that please

@NiiiiiiCK

2 жыл бұрын

Node

thanks man

How to download this coding platform?

Nice explanation! It is is exactly that I was after🤓

@FlorinPop

Жыл бұрын

🙏

How to get output like him ?

Learned some new stuff with the object counter, nice!

One doubt, why do we use count[item] instead of count.item even if it's an object?

@FlorinPop

4 жыл бұрын

Because item stands for 'a' then 'b' then 'c' and those are the properties we want to set and not the .item property.

@MaxProgramming

4 жыл бұрын

@@FlorinPop Oh so [] this is to set a new property to the object. I just saw it in arrays beforehand. Thanks

I really like your accent!

let sum = 0; number.forEach(function(value){ sum += value; }) console.log(sum); this would generate the same answer, is there any thing I should know about using it?

"let count = {}" means that you declare a variable with an undefined value?

@NiiiiiiCK

2 жыл бұрын

No thats empty array

@cristiano1706

Жыл бұрын

​@@NiiiiiiCK nope thats an empty object

this was very helpful, i enjoyed every moment of the tutorial and i understand array functions better now. just 1 question how do I display my console log in vs code.

@FlorinPop

2 жыл бұрын

I used nodemon. Made a video on my channel about it

@FavourAkpasi

2 жыл бұрын

@@FlorinPop a link to the video would be very helpful

@FavourAkpasi

2 жыл бұрын

i found the video. thank you.

@blueleaf9129

Жыл бұрын

@@FavourAkpasi instead of using nodemon, u can use the live server extension

thanks

Hi Florin, can you do a similar playlist of videos as you have for array methods but for strings? Thanks!

@FlorinPop

Жыл бұрын

Will create more content around it 😄

@user-ro3dg7sz6b

Жыл бұрын

@@FlorinPop wow didn't expect a response! fac acum un bootcamp si mi-au fost de mare ajutor video-urile tale! as fi foarte incantata daca ai fi dispus sa imi acorzi o ora din timpul tau intr-o zi pentru niste sfaturi. Happy to pay you for it! :D from a fellow Mureseanca

@FlorinPop

Жыл бұрын

@@user-ro3dg7sz6b Sigur, scrie-mi pe Twitter si rezolvam 😁

got yo million yet yo

thanksss

thank you rebeccaPurple man

Where are you from?

is this basically a for loop?

@FlorinPop

4 жыл бұрын

Yes, but it has a few advantages. I should do a video on that.

@MrShardrain

4 жыл бұрын

@@FlorinPop thanks bro, this programming is hard. I'll get to your level someday

1:25 - yeah coming from C/C++, Java, and Python but still... this doesn't make sense to meeeee😭😭😭 like what are those 3 parameters in the callback definition?😭😭😭 I can't understand JavaScript man

@thiyageshkanna

3 жыл бұрын

man,r u there?

Everywhere I read about forEach it says that the method does not return anything but in this tutorial the sum was clearly returned. WUT??? Am I missing something here?

@FlorinPop

2 жыл бұрын

The sum was not returned. It was calculated inside the function.

if foreach doesnt return anything how can it be used? Thanks

@FlorinPop

2 жыл бұрын

You manipulate data inside it

@ziggyjuarez8544

10 ай бұрын

He's manipulating the count object specifically

How do you clean the terminal?

@osama7646

2 жыл бұрын

just type clear 😁

@giodona1511

2 жыл бұрын

CTRL + L

Fact: Do you know you can't break from forEach loop? If yes, What is the reason?

@multitudes389

4 жыл бұрын

The forEach loop executes a callback function on each element of the array and therefore returning or breaking from it, would just return/break from the callback and not the loop. Also forEach is part of the functional programming paradigm where we want to use pure functions. Pure functions take some input and return some output based on that input. They are simple and reliable. And they do not produce side effects

Hi plss reply me i need help

Wooaah

Cool

your code could be done in almost only two lines, but thank you so much.

@FlorinPop

Жыл бұрын

You’re welcome

love you florin

Wait I thought you were taking a pause?

@FlorinPop

4 жыл бұрын

Check out the previous Live Stream 😅

@MaxProgramming

4 жыл бұрын

Yeah, check it out

vip pro

I've been hearing a lot of.... distain for the "forEach" method. Especially in the context of asynchronous code. Not an expert, but be careful using this method.

وری گود

I personally hate Javascript it's so loosely typed, with no structure in mind Garbage!!

I found an easier way, const countries = ['Argentina', 'Brazil', 'Argentina', 'Portugal', 'Brazil']; // Keep track count of every country let count = {}; countries.forEach((country) => { count[country] = (count[country] || 0) + 1; }) console.log(count);

Thanks!