What are some common mistakes when using first-class functions?

What are some common mistakes when using first-class functions?

Some common mistakes include not understanding scope, misusing 'this', and forgetting to bind functions.

Can you explain how scope affects first-class functions?

Sure! Scope determines the accessibility of variables. In first-class functions, if a function is defined inside another, it can access the outer function's variables.

What about the 'this' keyword? How can it be misused?

The 'this' keyword can be tricky. If a function is called as a method of an object, 'this' refers to that object. If called standalone, it may refer to the global object or be undefined in strict mode.

How can I avoid these mistakes?

To avoid these mistakes, always be mindful of the context in which functions are called, and consider using arrow functions for lexical scoping.