try, catch, finally, throw - error handling in JavaScript

Error handling in JavaScript uses the keywords: try, catch, finally, and throw.
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[@Krenil.]

// error handling use the following keyword:
// 1.try => lets you check the code for errors
// 2.catch => lets you handle the error
// 3.throw => lets you create a custom error
// 4.finally => lets you execute code after try and catch regardless of all the result
#harrybhai

[@jdhp3696]

This is one of the clearest and well explained videos I seen on youtube related to Javascript. Thank you.

[@justindglee]

Totally agree

[@msfkmsfk]

I agree.

[@msfkmsfk]

@@justindglee I agree lol.

[@EvilTim1911]

Great stuff, straight to the point and explained through practical examples instead of needless theory. Thank you

[@chrischong8286]

I don't see the point of finally.

[@Alexander-qg2tb]

Если в секции try будет return, то произойдет выход из функции и тот код который после catch не выполнится. Finally гарантирует, что код внутри обязательно отработает

[@leeeric6292]

But what is the point using the "finally" block，it seems there is no difference I just simply using a console log statement.

[@kebman]

try {comprehend} catch{ball} throw{nothing to throw, it got me in the eye}

[@jakemertz2660]

Very good content. Also very good diction. Thank you :)

[@JoseBarakat]

Muy buen video. Buena calidad de audio/video. Codepen en pantalla completa con buen tamaño de fuente. Viéndolo desde mi celular. Muy buen ritmo para explicar, buena pedagogía. Menos de 5 minutos, buen tiempo, suficiente información. Tema explicado y entendido de forma satisfactoria. Gracias.

[@ru.hend_]

try {
try {
try {
try {
try {
try {
try {
try {
try {
try {
throw new Error("Error level 10");
} catch (errorLevel10) {
console.error("Error level 10: ", errorLevel10.message);
throw new Error("Error level 9");
}
} catch (errorLevel9) {
console.error("Error level 9: ", errorLevel9.message);
throw new Error("Error level 8");
}
} catch (errorLevel8) {
console.error("Error level 8: ", errorLevel8.message);
throw new Error("Error level 7");
}
} catch (errorLevel7) {
console.error("Error level 7: ", errorLevel7.message);
throw new Error("Error level 6");
}
} catch (errorLevel6) {
console.error("Error level 6: ", errorLevel6.message);
throw new Error("Error level 5");
}
} catch (errorLevel5) {
console.error("Error level 5: ", errorLevel5.message);
throw new Error("Error level 4");
}
} catch (errorLevel4) {
console.error("Error level 4: ", errorLevel4.message);
throw new Error("Error level 3");
}
} catch (errorLevel3) {
console.error("Error level 3: ", errorLevel3.message);
throw new Error("Error level 2");
}
} catch (errorLevel2) {
console.error("Error level 2: ", errorLevel2.message);
throw new Error("Error level 1");
}
} catch (errorLevel1) {
console.error("Error level 1: ", errorLevel1.message);
} finally {
console.log("Finally block executed");
}

[@mahathirmohammadshuvo9358]

bro, u deserve a Nobel peace price for this video

[@keerthi6205]

It will be more useful if the subtitles are included.

[@truth-12345.]

The clearest explanation of error handling in JavaScript

[@christopherjohncali5237]

Hey, Mr. Carnes. Great video. Question: do you have to rely on any dependencies to run this code? Like a unit testing library/module or something? Thanks so much.

[@coolbrotherf127]

I'm no expert, but to my knowledge this code is very standard JavaScript so it should just work without anything extra.

[@MichaelShingo]

No, try/catch/finally comes built into javascript

[@soundweaver923]

How does js connects the "message" with what's written inside the parenthesis?? There's no var or something attributed to "message"...is it one of those standardised things?

[@DrWho2008t101]

thanks for the video I appreciate your work

[@daveplummer3441]

Thanks for the very clear explanation, but I'm trying to trap an error in the following document write statement (when the file doesn't exist). Evidently it is not throwing any error to detect when the file does is not found, any ideas?
document.write('')

[@mjylove2]

this is amazing video

[@kennycol1234]

you beautiful human being!, you.
This was exactly the explanation I needed, kudos to you!

[@bertt1055]

Would help newbies if it was indicated that "SyntaxError" is actually a JS object

[@LordMarcus]

You, I love you. Just found you at random. Your videos are clear and concise and seem to always be about a specific point.

[@chacha-17-7]

Absolutely incredible explanation! I should give you all of my tuition!

[@m7mdnho154]

amazing video. although it made me think that I might actually be colorblind

[@ansignia]

This video makes so much more sense than the MDN documentation.

[@Jishnuk011235]

Now i got a better view

[@gazell3s]

Awesome tutorial! You sound a lot like Tom Green, btw :)

[@beenyshsaeed4559]

Lucidly explained for a layman like me. Well done!

[@nwobodogeorge5370]

Thank you, the video very brief and straight to the point. Thank you once more.

[@Abhay.Bhandari]

is err predefined keyword or its a user defined variable?

[@DeViLTh0rn]

Dot steaik

[@corykemp1256]

Quick question: would it be more appropriate to throw q referenceerror vs a syntaxerror in your example?

[@fregina3813]

thx a lot

[@zurriyotbeknabiev1190]

thanks!!!

[@blyfo]

Hi, if when throwing an error it jumps to the catch() method*(skipping the console.log), how do you throw multiple errors?

[@jbarriossandrea]

debugging your current error.

[@K1ethoang]

Well explained video

[@thequickcode5144]

Clearly explained video thanks sir

[@alex_3D_websites]

Great content, keep up the good work!

[@gamesniper98]

gilfoyle

[@gorkemgok9313]

You explain very clearly.

[@kierachelsea2601]

great explanation, thanks!!!

[@theinthanhlan3582]

My blood is boiling while catching "the Object is possibly 'null' or 'undefined in typescript" .
Why don't we just use java for web dev instead of creating typescript WHYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY
@mySkillIssue.

[@nicolas.mellado]

I have a better idea of throw now, thanks!

[@beenyshsaeed4559]

Throw it already. :p

[@leonardopinheiro6693]

Very good tutorial!
Thank you!

[@GilisFansClub]

thank you so much!

[@eddawry]

its clear bro

[@andreramadhan1778]

Great stuff, thanks 😁

[@mattyblake9427]

clear and awesome

[@license2Bort]

Fantastic Video!

[@stevenarmoo7011]

where did he get the (e) from tho... I can't seem to find it anywhere else in the code?

[@verquo]

It's a parameter. If there's an error, E will contain the error message, then you can work this error object

[@joe-un1ky]

More helpful answer: catch automatically 'creates' the e object, but you have to enter it into the parentheses to be able to use it.
It is a bit odd - don't think too deeply into it

[@GuitarsRgood7]

Very helpful!

[@RoyerAdames]

Thank you

[@akshayvanil9342]

Great stuff

[@andriciandu]

This is a great explanation. Hats off to you, sir ^^

[@manuchehrmukhidinov7111]

Thank you.

[@johnl.delaumbria9001]

man this save me a lot of time!

[@helloitsjury]

thank you for this!

[@Isra-p1]

Awesome Beau, thanks!

[@webapplicationguide3798]

Thank You !!

[@ajai.a2374]

Thank you!!

[@threeone6012]

Outstanding!

[@roytan5881]

You're great at teaching!

[@MrChubib0]

1st

[@Mong3]

Congrats!

[@trappedcat3615]

MrChubib0 5th