#83 JavaScript Bangla Tutorial | Callback Pattern | Asynchronous JavaScript - 3

In this video, I have described how to use JavaScript callback function pattern to handle asynchronous operations.

References:

কোন প্রশ্ন থাকলে comment section এ comment করতে পারেন। সেই সাথে আমাদের একটি Facebook Group আছে। সেখানেও আপনার প্রশ্ন করতে পারেন। সব প্রয়োজনীয় link নিচে দেয়া হলো -

#learnwithsumit

[sourovdeb]

After watching several videos on the Callback function, I finally came across your video which clarified everything about this function. I believe this tutorial is the best JavaScript tutorial created by a Bangladeshi.
Your tutorials have been an invaluable resource, sir. I want to extend my sincerest gratitude to you for taking the time to create them. Thank you for sharing your knowledge and expertise with us.

[jikumollick]

এতো কঠিন একটি বিষয়কে আপনি একদম দুধভাত বানিয়ে দিলেন। আমার সৌভাগ্য, আমি আপনার টিউটোরিয়াল দিয়ে শুরু করেছি। অনেক অনেক ভালোবাসা জানবেন দাদা।

[iqrauszud]

ভাইয়া আপনার এই ভিডিও গুলা দেখে আজ পরিপূর্ণ বুঝতে পারলাম জাভাস্ক্রিপ্ট এসিঙ্কোনাস আর সিঙ্কোনাস...ধন্যবাদ ভাই এত সুন্দর কন্টেন দেওয়ার জন্য।

[BrightSkills]

এই প্যটার্ন টা বুঝতে আমার বেশ কয়েক দিন সময় লাগল.. আজ খুবই সহজ মনে হচ্ছে ..

[Mehedihasan-ekzg]

Great example for callback function, i had ever seen.
take love from my deepest heart.

[nahidulfahim]

Whenever I have to search anything on YouTube about JS, I write the search term like "JavaScript Promises learn with Sumit". And the term becomes crystal clear when I hit the play button.

Can't thank you enough vaia 💜

[Animesh]

I am from india, i surf through many videos, but this where i completely understand the callback

[hakikatsareebitan]

just awesome... concept is clear. thanks

[mashfikurrahman]

Really awesome Explanation with perfect example, Thanks Bahia

[mubin_ru]

Onek dhonnobad dada...apnar prothom je callback, promise, async await nia tutorial cilo oitar kichuta part bujha osompurno callback er ai tutorial ta dekhar por pora bepar ta clear holo.

[mdadnan]

first 12 mnt mathar upor diye gelo but porer time sheshe actually bujhte parlam what is call back function 😍

[shawon]

Great explanation brother. You made it super easy.

[sabbirhossen]

sotti vaia amara onek vaggonan ai tutorial gola peye....valobasa niben vaia duwa tahakbe apnar r apnar familyr jonno

[mr.promit]

1st bar valo bujhi nai but porer bar a kapai dici tnx sumit vaiya for this great tutorial

[imranhossain]

Thanks a lot for this tutorial
"take user inputs by promt()
const paymentSucess = true;
const marks = parseFloat(prompt("Enter your marks: "));
const jobqulify = parseFloat(prompt("Enter your qualify marks: "));

function enroll(callback){
console.log("course enrollment in progress...");

setTimeout(function(){
if(paymentSucess){
callback();
}
else{
console.log("payment failed");
}
}, 2000)
}

function progress(callback2){
console.log("course on progress...");

setTimeout(function(){
console.log("your certificate is preparing!!");
if(marks >= 80){
console.log("congrats!!! you got the certificate");
callback2();
}
else{
console.log("you are not eligible for certificate");
}
}, 3000)
}

function getCertificate(callback3){


setTimeout(function(){
console.log("waiting for the job result");

if(jobqulify >= 95){

callback3();
}
else{
console.log("you are not qualified for this job");
}
}, 2000)
}

function getJob(){


setTimeout(function(){
console.log("congrats! you got this job");
}, 1000)
}

enroll(function(){
progress(function(){
getCertificate(getJob)
})
});

[trishansaha]

mone hoy na callback niye basic knowledge r baki ache. Thanks!!!

[santanubhowmick]

Many many thanks from Kolkata. Best JavaScript tutorial in my native language. Earnest love from my heart

[MarufHasanShihab]

Thanks for the detailed video Dada. Very informative💖 Watch Date: 08-01-2024

[ibrahimsikder]

Etu easy kore bujano r kutaw dekini...Thanks you so much form my core

[munnikhanam]

Thank you Dada. It's become very easy for me now😊