JavaScript spread operator and rest parameters tutorial ES6 / ES2015

Understand new features of JavaScript ECMA6 - spread operator and rest parameters.

The spread operator allows an expression to be expanded in places where multiple arguments (for function calls) or multiple elements (for array literals) are expected.

- What is spread operator
- Benefits of using spread operator
- Improving performance using spread operator
- Passing spread operator as a function parameter makes it rest parameters.
- Using spread operator in arrays

#JavaScript #SpreadOperator #restParameter
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Help me translate this video.

[akhileshguptaakhi]

Perhaps you might want to also include below syntax too for merging arrays, assuming a and b are also arrays
var c = [...a, ...b]

[Vivaxsolutions]

techsith, time and again, shows that teaching is a gift; amazing examples - and to the point. Well done! Your work, time and effort in producing them are fully appreciated.

[sophialee]

'go to heaven' didn't expect that come out 😂🤣

[Carl-yuuw]

1.16 it is actually the rest operator in that scenario, as you are collecting unknown quantity of arguments into the new array n. Opposite use, i.e. to dismember an array, but used in a function call would be the spread operator.

[malbu]

Great video - I see this operator used all over the place in projects at work. This is the best explanation I have seen! And who doesn't love toast?!

[shay]

You have a great teaching style. Straight to the point and cover the major use cases real well! Thx!!

[kazaakas]

3:17

You should do this with Array.from(arguments);

Also, parameters can be left out entirely if you were to do it the other way:

[cynthiaclinton]

Thank you, great explanation on spread operator and rest parameter!

[threeone]

I give every techsith video a thumbs up.
Always good.

[jsnode]

ES6 is very very fucking important these days to learn frameworks.

[karthigadevi]

U re rocking..simply superb...need more am not getting why 27 dislikes...

[mmmmmmm]

Ok, i stand corrected, that is the best thumbnail on youtube! Sheesh, i wish we were in same team!

[sup]

That's amasing and really helpfull video, It's must be in top!

[vinkrins]

Can't stop watching your videos, I am addicted and subscribed :D

[aseel]

the big difference between the spread operator
and the rest parameters
is actually the place in which we use each of them.
So the spread operator is used in the function call.
While the rest operator is used in the function declaration.

[lloydlasrado]

You remind of Dev Anand. Awesome videos as always

[amirkahinpour]

YouReAwesome= ["you're awesome", "best tutorial ever", "easy to follow"]; thankYou=["thank you sooo much", ...YouReAwesome]; LOL

[RodolfoRivera]

I just stumbled upon your channel: Thank You!

[Acid]

[1, 2, 3].concat([4, 5, 6])
not a big problem.

… is really usefull as deep copy operator:
b = { …a }

[Amitkumar-zpwb]

He can joke with a straight face ... #BigRespectSir