Sometimes, we want to write nested functions in JavaScript.
In this article, we’ll look at how to write nested functions in JavaScript.
How to write nested functions in JavaScript?
To write nested functions in JavaScript, we can define functions inside functions.
For instance, we write
const a = (x) => {
const b = (y) => {
return x + y;
};
return b;
};
console.log(a(3)(4));
to define function b in function a.
We return function b in the last line of a.
And then we call a with 3 to return b.
Then we call b with 4 to get 7.
Conclusion
To write nested functions in JavaScript, we can define functions inside functions.
