What are the differences between a function declaration and a function expression?
A function declaration defines a function with a name and is hoisted, while a function expression can be anonymous and is not hoisted.
Can you explain what an arrow function is and how it differs from regular functions?
An arrow function is a shorter syntax for writing functions in JavaScript. It does not have its own 'this' context, unlike regular functions.
What about higher-order functions? How do they fit into this comparison?
Higher-order functions are functions that can take other functions as arguments or return them. They are essential for functional programming.
Are there any performance differences between these function types?
Yes, performance can vary. For example, function declarations may be faster due to hoisting, but the differences are often negligible in practice.
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