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Start your free trialShay Paustovsky
969 PointsCallback functions and nested functions clarification
Hello,
So I am a bit confused with the idea of passing a function as an argument to another function.
I have this code example and would love if someone could clarify it a bit for me :
function exec(func, arg) {
func(arg);
}
exec((something) => {
console.log(something);},
"Hi, There");
My Question is :
Why does the function output the string "Hi, There" , but the anonymous function requires a parameter named "something" how does it work together?.
Thanks a lot in advance.
Shay
3 Answers
Steven Parker
231,236 PointsThis example is a bit of a mind-bender. But the basic idea is that "Hi, There" gets substituted for "something" when the anonymous function is called.
Since all the anonymous function does is to call "console.log", you could simplify the call to this, which might be a bit less confusing:
exec(console.log, "Hi, There");
Humoyunmirzo Nosirov
Courses Plus Student 5,154 Pointsyep that is a bit confusing ,
Shay Paustovsky
969 PointsYou're the best Steven,
thanks alot
Shay