Discussion on: UNDERSTANDING FIRST-CLASS FUNCTIONS AND ANONYMOUS FUNCTIONS IN JAVASCRIPT

[Honza]

Is this a typo?

const anonymousAgeTeller = (age){
    console.log(`my age is ${age}`);
}

This produces an error: Uncaught SyntaxError: Unexpected token '{'

Did you mean:

const anonymousAgeTeller = function(age){
    console.log(`my age is ${age}`);
}

I'm sorry to be nitpicking but…

2 + 2
// this is an arithmetic expression, 
// the + sign in this context is an arithmetic operator
// not a function. Try console.dir(+), you get an error.

[Lawrence Eagles]

Hello Honza, thanks for your observation.

const anonymousAgeTeller = (age){
    console.log(`my age is ${age}`);
}

This is actually a typo which I have corrected. Thanks again.

However in regards to the expression:

2 + 2

This is actually an arithmetic expression no doubt and as understand it, the addition operator is a special function that uses the infix notation and returns the value of adding its two operands.
So it is a function.
I did not fully understand you here.

[Honza]

Hi Lawrence,
first of all, I'd like to thank you for the article. I think it's brilliant! And thanks for getting back to me this quickly and fixing the typo.

I'll elaborate a bit on the + operator. What I meant, it's not a Function object. The compiler likely works with it as an infix function, but strictly speaking, it is not a Javascript function as such. I just believe that the example adds unnecessary confusion to the topic.

[Lawrence Eagles]

Hello, Honza,
Now I understand you better. I have removed those ambiguous sections of the article.
Thanks for helping improve the quality, you are appreciated.

[Honza]

Thank you for sharing your insight with the community. I really appreciate your effort.