Promises Basics, Promise.then() & Promise.catch() | JavaScript Tutorial In Hindi #39

[@aniloli]

small try: function checkpwd(pass) { return new Promise((resolve, reject) => { setTimeout(() => { const defaultPass = "admin"; defaultPass == pass ? resolve() : reject(); }, 1000); }); } let passEntered = "harry"; checkpwd(passEntered) .then(() => { console.log("Password matched"); }) .catch(() => { console.log("Access Denied"); });

[@ImranKhan-ht2qm]

o bhai wah mashAllah. good

[@Bhushan_gaikwad10]

Bhai function define nhi kiya promise ma

[@anantvaid7606]

Bhai, I was trying to learn this from different sites bit was not able to understand. But aapne kya samjhaaya hai🔥. Love you bhai, aapka data science ka bhi playlist mast hai. All the best bhai ❤️.

[@vishwasagrawal4700]

Promise.then(console.log('harry bhai explained and fulfiled the promise').catch(console.log('ye kabhi print hi nhi hoga')

[@preetiharjani1654]

i tried oddEven exercise with promise: console.log('tut38(quiz)'); function oddEven() { return new Promise(function (resolve, reject) { setTimeout(function () { let n = 45; if (n % 2 == 0) { console.log('number is even'); resolve(); } else { console.log('number is odd'); reject(); } }, 5000); }) } oddEven().then(function () { console.log("Task resolved"); }).catch(function () { console.log("Oops!!Task rejected"); })

[@oook3407]

jan aap nay bht piyara function banaya ha

[@avipraidey5767]

Very good 😊🙌

[@hamidsahi4357]

but we can do same thing by using simple function so whats the difference question

[@madhavjaveri1478]

var marks=prompt("enter marks"); function papaPromise(){ return new Promise(function(resolve,reject){ score = parseInt(marks); if (score

[@prajwalzingare7332]

function number(n1, n2) { return new Promise((resolve, reject) => { if (n1 >= 0 || n2 >= 0) { console.log("Function: your promise has been resolved"); resolve(n1 + n2); } else { console.log("Function:your promise has not been resolved"); reject("sorry not fullfilled "); } }); } number(10, -20) .then((result) => { console.log("prajwal:Thanks for resolving " + result); }) .catch((error) => { console.log("prajwal:very bad" + error); }); great explanation thanks harry bhaii❤❤

[@muhdani987]

Behtareen hogaya bhai... harry Bhai aap se Dil lagi hogai he yaar....💞💕❣️💌❤️💝💟💓💗💖 Ab aapke saaray coarses bhi dekhne ka iraada ban Gaya he... Love you 😘😘😘 From Pakistan ❣️

[@akankshapatel9508]

Very useful to understand this during my internship phase thank you!!!!!!

[@Blackfeather7777]

Hi can you help me with what questions you faced during your js interview ?

[@the_xibalba]

I stumbled upon this video while searching for tutorials on promises, I had been so confused all this time. This worked for me! Thank you Bhai!

[@harshchopra1588]

Thanks Harry bhai! Your Quiz solution is here: function dish(){ return new Promise(function(resolve, reject){ setTimeout(() => { const error = false; if(!error) { console.log("Yes!promise is resolved"); resolve(); } else { console.log("No!promise is not resolved"); } }, 4000); }) } dish().then(function(){ console.log("Dish was tasty"); }).catch(function(){ console.log("Dish was insipid"); });

[@karanveersingh5535]

U haven't put reject() then what's the point of putting .catch() function .It won't be called .

[@rajputayush6066]

function myFun(num1,num2){ return new Promise(function(resolve,reject){ if((num1+num2) >50){ resolve(); }else{ reject(); } }); } myFun(70,30).then(function(){console.log("Number Is Greater then 50 ")}).catch(function(err){console.log("Number is less then 50")});

[@andressergio1532]

sorry to be so offtopic but does anyone know of a method to log back into an Instagram account..? I somehow lost my password. I would love any help you can give me

[@ikeroliver7186]

@Andres Sergio instablaster ;)

[@andressergio1532]

@Iker Oliver I really appreciate your reply. I found the site thru google and im waiting for the hacking stuff atm. Looks like it's gonna take a while so I will reply here later with my results.

[@andressergio1532]

@Iker Oliver It did the trick and I actually got access to my account again. Im so happy! Thanks so much you saved my ass!

[@ikeroliver7186]

@Andres Sergio you are welcome xD

[@bisworajsaheb4171]

Watching right after a year. Wish I had found it before. Thanks Harry bhai.

[@karanludhani6072]

Harry bhai dsa k lectures b jaldi upload kijiye... Hm logo k interviews ka time aa gya hai. Or apke lectures se bahot help milti hai.. thank you so much for giving all these contents

[@nielltalwar1574]

thanks harry for such a brilliant and simple explaination. here is my practise let p1=new Promise((resolve,reject)=>{ let input=prompt("enter a number"); if(input%2==0){ console.log("even number"); resolve("Hurray"); } else{ console.log("odd number"); reject("oh no!"); } }); p1.then((msg)=>{console.log(msg); return new Promise((resolve,reject)=>{ let name=prompt("enter your name"); if(name=="nitin"){ resolve(); } else{ reject(); } }) }).then(console.log("Nitin found. balle balle!")).catch((err)=>console.log("Promise rejected!",err));

[@codewsohan]

You resolved your promise. Great explanation ! Loved it ♥️

[@amiteshsinghpatel6705]

D:sg

[@amiteshsinghpatel6705]

Pppppp

[@gauravsingh4982]

true

[@abhisekupadhaya]

Sir, You are best KZbin programmer. Please, Make tutorial on OpenCV for python. I want to apply OpenCV in Machine Learning.

[@Satish_Kumar_Gupta]

harry bhai aapne apna best promise video ko successfully resolve kar liya. Thank you so much...:)

[@AkshitSangwan-v8l]

Best Expalanation ever in the most layman language.

[@maaz1150]

Learning my entire engineering from here. Thank you.

[@Shillu1988]

Finally Today I have understand Promises, Thanks Bro

[@av1shek_ps]

Can any one explain me or give me code how to use setTimeout in promise? Is it necessary to define function in promise only can we not give only name of function there and define it at any other place.

[@av1shek_ps]

Bro if you know can you explain me

[@av1shek_ps]

//Can anyone tell me how to wrap it with setTimeout function console.log('Now you are online.'); function callingfun() { return new Promise(function (resolve, reject) { let xhr = new XMLHttpRequest(); xhr.open('GET', 'kk1.txt', true); xhr.onload = function () { if (this.status === 200) { console.log(this.responseText); resolve(); } else { console.log('some error occured'); reject(); } } xhr.send(); }) } callingfun().then(function () { console.log('promise resolved'); }).catch(function () { console.log('promise rejected') });

[@Virus-ke8xj]

@@av1shek_ps I think there's no point in using setTimeout function over here, I mean, what you are doing is sending a get request and checking the status of the response, there's not time involved right? If u want you can add it, but here it seems to be illogical

[@Virus-ke8xj]

Just wrap everything starting from initialisation of XML object to the end inside the setTimeout function

[@sohamnesarikar5516]

Harry bhai...apne promise pura kiya...samaj aa gaya promise😄❤️

[@anantraj1071]

harry bhai ...bht jagh se try kra kia but atlast yha jake samjh aaya thnxxx bhaii!!!!!

[@sourabhsivare1876]

Bro great explaining, hats off to your efforts

[@muneebzubair5069]

promise resolved() with Love from Pakistan Lahore Punjab ❤️

[@dr.ramkishorsah495]

waah kya explanation so easy to understand to learn a complex thing. Salute🤘🙏🙏🙏

[@abhimalvekr127]

Good one bro. Bohot ache se samjhaya bhai ne! Keep up the good work

[@kartikeykakaria8a168]

Sir maine kahi jyada jagahon se promises sikhne ki koshish ki par samajh nahi aaya par aapki video dekhke pehli bar mein hi samajh aa gya. You the best programmer on youtube! One request : pls make a tutorial on sql also please :)

[@aevanvaghani3593]

okkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkl.

[@umergillani5046]

Love from Pakistan Karachi❤️

[@muhammadyousufjaseem4084]

I'm also

[@shaneqasim5137]

@@muhammadyousufjaseem4084 Same

[@shreenidhideshpande]

I think I searched all sites, books but not got the concepts this much clear . Thank you very much Bhai. please make a series on react and node too

[@paramsaini6932]

Best In The World (ABOVE ALL) THANKS bro

[@rpnrko3612]

Understood in one go. Patte se headshot Harry bhai!!!

[@travelnlearn]

mast hai bhai maja aa gaya

[@savanpatel9641]

thank you bhai ...........u r d best youtube programmer ever................

[@parmarmayank7087]

You are amazing brother. God bless you

[@hassanahmed8216]

Amazing explanation!!!❤️❤️❤️

[@utkarshsingh2912]

console.log('Promise Quiz') function promise(){ return new Promise(function(resolve, reject){ let understood = true; if(understood){ resolve(); } else{ reject(); } }); } promise().then(()=>{ console.log('Thankyou harry bhai sab samjh me aagya'); }).catch(()=>{ console.log('Samjh ni aya') })

[@pratikpawar376]

//Harry bhi ka promise function pratikpromise(){ return new Promise(function(resolve, reject){ setTimeout(()=>{ let error = false; if(!error){ console.log("Harry bhai ka video dekha samaj me aa chuka hai as per the promise of harry bhai"); resolve(); } else{ console.log("Harry bhai ka video phir se dekh le samaj aa jayega"); reject(); } }, 1000) }); } pratikpromise().then( function() { console.log("Thank you So much Harry Bhai"); }).catch(function() { console.log("Sorry Harry bhai, lekin koshis karuga samaj ne ki") });

[@javeriyakhan1773]

promise resolved!! well explained!!👍

[@TechnicalAnkesh]

Harry bro as always you resolved your promise LOVED YOUR EXPLANATION🤩🥰

[@vieharchives8208]

// If you know Python, this concept is similar to Try and Except. // Here is simple example of Promises function oddEven(number) { return new Promise(function (resolve, reject) { if (number%2==0) { resolve(); } else { reject(); } }) } oddEven(16).then(function () { console.log("Your number is Even") }).catch(function () { console.log("Your Number is Odd"); })

[@anubhavverma1591]

Promise Resolved Thanks Harry ❤

[@sports4yoo]

3M Soon Harry Bhai big congratulations in advance 🎉❤

[@vikaschauhan-rv6fi]

starting mai laga tha ki nahi aayega samajh mai, par 1 dum badiya se samajh aagaya

[@karthikjoshi6386]

Famous club concept if (age

[@afsanatasnim3542]

ur comment helped me to know the difference

[@afsanatasnim3542]

thnks

[@ibtehaj95]

Thanks a lot bro. You explained it very well.

[@harshpreetsingh6971]

Thanks for resolving your promise ♥️🙏💯

[@Saifolic]

it's really very useful thanks a lot

[@ajinkyajadhav8049]

function sum(a,b){ return new Promise (function(resolve, reject){ let c = a+b; if (c >100){ console.log("Sum of A and B is : ",c) resolve("sum is greater than 100") } else{ console.log("Sum of A and B is : ",c) reject("sum is less than 100") } }) } sum(10,23).then(function(a){ console.log(a); }).catch(function(b){ console.log(b) })

[@bantisharma8119]

Best Video for learning Javascript. Thank you harry bhai

[@vivekkumar-pc1xy]

mein just abhi brad traversy ka lecture attend kiya tha udemy se, Promises ka. Difference itna hai apne us lecture ko hindi mein explain kr diya. But mughe ab smgh agya

[@osamakhan2552]

I have watch this video 4 time now finally i'm understand 😍

[@Unrealinsaan72]

The way you are explaining is really good.

[@khelanmehta1554]

Awesomeeeee bro dhang se samhjha diya tune

[@mrinalraj7166]

Thank you harry bhai. You are god.

[@webprogramminghindiurdu3279]

Bohut acha explain kiya bhai ap ney

[@Travelmoments]

Sabashhhh!!!!! bhahut badiya samjaya apne..

[@shrutigoyal3494]

you nailed it. and yes it is a resolve.

[@TheCuratedUX]

great content

[@thevarunparashar]

You are an amazing guy... keep it up

[@Rahulyadav-ry1lk]

Sir ke fan like thoko👈👌🤙

[@Rahulyadav-ry1lk]

Big fan

[@vipinsaini3497]

Hi. Your tutorial is informative. I loved it. Thanks for sharing and keep the good work going

[@javascriptwar9525]

you save my life brother..🙌awesome

[@ayushajayuzfmvwfenu7720]

after buying the Coding ninja web dev course, come here to catch on, easy to understand video loved it ❤️

[@webcreationstudio7088]

apne course liya tha kiya?

[@ayushajayuzfmvwfenu7720]

@@webcreationstudio7088 yes

[@VedPrakash-kf6kv]

congratulation for 2million hary bhai

[@insaanonline]

thanks

[@yashwantsahu1752]

promise done perfect harry bhai ...

[@anaskhan4841]

Much Much Appreciated Harry Bhai...

[@sugandhaparasher8861]

Super Dost... very well explained

[@vaibhavkulkarni5601]

Very nicely explained Harry bhai !!

[@parshantmadaan4709]

Your promise resolved Thanks

[@deepakguled809]

I initially watches your promises on ultimate javascript course very confusing there here clearring explained my suggestion kindly upload this in that playlist

[@pushkarkumar5578]

bhai gajab padhate hoo app maja agaya :*

[@MuhammadBilal-fw7gh]

Harry bhai you really resolved your promise❤😉

[@shivamnayak2998]

function compare(a,b){ return new Promise(function(resolve,reject){ if(a===b) resolve("Equal"); else reject("Not equal"); }) }; const genericFn = (str) => console.log(str); compare(3,4).then(genericFn).catch(genericFn);

[@hmmmza]

function isDay(hours){ return new Promise(yes, no){ if(hours>5 && hours

[@hitenarya4987]

Harrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrry bhai awesome video :D

[@Hassanali-tj1kq]

bhi muzy tu maza a agya phr na ma mara pura samj ma a gaya thank you bhi

[@moderngypsy5980]

How should I thank you Harry bhai, you are the best..

[@nayankumarshit7522]

Harry bhai i like your django tutorials.. love you vai

[@iamSadabAlvi]

I am always ready for your video Like too banta hai

[@akashsolanki5570]

@codewithharry please explain the Promise constructor. Isn't it supposed to make a object, which should look like this {...} when we do console.log(func1())

[@ibtehaj95]

Yes, Promise will create a new object. Harry just chained more stuff to it and probably displayed it (I don't remember the timestamp). I wrote very simple code to make myself understand, it might help. ///////My Code//////////// let oath_keeper = 0; const promiss = new Promise(function(accept, excuse){ if(oath_keeper === 1){ accept("Oath Kept"); } else{ excuse("Oath Broken"); } }); promiss.then(function(message){ console.log(`Message from Promiser: ${message}`); }).catch(function(message){ console.log(`Message from Promiser: ${message}`);; });

[@lopamudrasahu2202]

superb brother

[@ashpreetsinghanand7260]

function f2(){ return new Promise((resolve,reject)=> { setTimeout(() =>{ let flag=true; if(flag==true){resolve();} else{reject();} }, 2000}; }); } f2.then(()=>{console.log("no error from API");}).catch(()=>{console.log("error");})

[@msbasera]

Thank you bhai ❤️

[@pranaykosulkar641]

Harry Bhai you resolved your promise 🙏 ❤️👍

[@subhasishsahu9749]

thanks bro i was so confused about this and you helped me a lot .

[@khatariinsaan5284]

Mai aap logo se promise karta hu ke mai aap logo to *promise* acche tarike se batunga What a way to teach 😂😍

[@sushmapatil4478]

Wow very nice

[@shaheensiddiqui1952]

sir we are always see you full vidio

[@aasrivastava5851]

Your videos are very good sir.Appreciate your youtube work. Please make a video on AJAX

[@CodeWithHarry]

I have already uploaded a video no Ajax with title "Ajax tutorial in hindi" Kindly access the playlist!

[@AbhaySingh-dd9xc]

@@CodeWithHarry harry bahii bilkul right

[@abhijitbarman4401]

Harry bhai apne promise pura kardia!

[@Ertyuiigff-sq5fi]

superb video

[@divyanshuverma3205]

Hillarious sometimes - " mai aapse promise krta hu ki aapko ...Promise() ... achhe se btaunga yahi hota hai promise" 😂🤣😂🤣😂

[@tanmoyhaldar4514]

I think my iitkkgp profs will also not teach me like this. Loved the way you used examples.

[@prit7787]

THANKS HARRY!!

[@muhammadjunaid2329]

Love from Pakistan Bhakkar🧡

[@fattehalisunasarasunasara4111]

Sir materialize css ki series banavo please

[@networkguy6650]

Thanks buddy..... btw liked+subscribed

[@biswamohandwari6460]

Tussi great ho

[@laxmipriyapradhan1704]

Please harry kya ap ye 4 concept ko milake ek website banana sikha sakte ho please please please🙏 - Generator - Promises - AJAX Request - - Callback Function

[@girishpandey9976]

Nice tutorials