What is difference between Arrow function and function?

Question

I know the the syntax is differ from function
but why we use arrow functions?

Answer 1

the biggest difference is that compared to a normal function, an arrow function does not have the following in its context:

1) 'this' keyword
2) arguments
3) 'super' keyword
4) new.target

also the 'return' keyword can be omitted when not using curly braces:

const sum = (a,b) => a + b;
instead of:
const sum = (a,b) => { return a + b };

Answer 2

it is more succinct, that's why it is paired with other ES6 feature such as Array methods forEach, map, reduce, etc.

Answer 3

Currying

https://code.sololearn.com/cu2DKco5Ho8a/?ref=app