What is function currying in JavaScript ?

Function currying is a way to change a function that takes multiple arguments, like sum(a, b), into a series of functions that each take one argument, like sum(a)(b).?

The end result is the same, but it can make the code more reusable and easier to understand.

Look at this simple example,

when we call the function sumCurry(2), it returns a closure. which is why the inner function which is returned from function sumCurry() can access the variable ‘a’ and adds it to param ‘b’ and return the result a+b when we invoke it (sumCurry(2)(3)).

So next time you find yourself writing a function that takes multiple arguments, consider using function currying to simplify your code and make it more flexible.

#javascript #javascriptdeveloper #webdevelopment #froend

Have you ever used function currying in your code? What were your experiences with it? Share your thoughts in the comments!!