Optional Chaining Operator (?.) in JavaScript

The optional chaining operator in JavaScript is convenient as it allows the developer to specify an object's property as being optional, and only return a value if the specified property is not "null" or "undefined" - otherwise return "undefined".

It's helpful when accessing data from an API, or generally where you're not too sure what data will look like, or knowing where optional fields exist. It can also be used in combination with the nullish coalescing operator to provide smart defaults 🙂

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#dcode #javascript

[srinivasaraoyp]

Uptill now, I have seen many video demo's on optional chaining operator. Your demo is excellent, in addition to it, you have covered so many topics, one after the other. Thank you very much.

[dasdisdus]

I've watched many videos about optional chaining operator but still don't understand until watch this. Thank you mate, god bless you.

[abdullahkhan-prip]

I opened multiple tabs to learn about optional changing operators, but after watching your video, I didn't need to look for others.

[marcospereira-qvlh]

I really liked your video. short, straight to the point, easy to understand. 100% tutorial quality. thanks for the service!

[ZeeshanHafiz-xhwq]

Thanks for this very clear understanding of what optional chaining is!

[fahmidhossainSakib]

thanks for comparing the optional operator with the ternary operator of java at 2:46 . It made me understand profoundly.

[damianodamian]

Bloody hell man, you're so good at explaining those concepts! Thank you so much :)

[MinhNgwen]

Great content and examples! Thanks for saving us time!

[beinyourguard]

'And "supposedly" I'm 28 years old"
I feel ya, man...

[dejanobradovic]

Best explanation that I found for Optional Chaining Operator! (subed)

[qinisodlamini]

Great video and explanation, I understood the concept in less that 2 minutes.

[shakilahmed]

You must have mentioned that what you have shown in 2:45 is called ternany operator

[prudhvichinnam]

Awesome content keep doing this for beginners it's lot a helpful Thankyou👍🙏

[thullyodamasceno]

What a great explanation! Really complete tutorial! Thanks!

[smoothbeak]

No one seemed to pick up that you kept calling the question marks "dollar signs" haha.

[novanoskillz]

i have been using ? at work without really knowing what it does (the linter just tells me to add it). this video was very helpful. thanks

[asheeshmathur]

Excellent Tutorial, I was looking for quick solution...God Bless You

[jayanthsaikiran]

Cool vs theme.
what font are you using in vs code ?

[minhphucle]

My vscode keep adding space before and after my question mark so i can't use the optional chaining.Do you know how to fix that?Pls help me =<

[bullettime]

There are a billion different names for this operator