What are first-class functions in JavaScript?

Can you explain what first-class functions are in JavaScript?

First-class functions in JavaScript mean that functions are treated as first-class citizens. This means they can be assigned to variables, passed as arguments to other functions, and returned from other functions.

Can you give me an example of a first-class function?

Sure! Here's a simple example:

function greet(name) {
    return `Hello, ${name}!`;
}

const greeting = greet; // Assigning function to a variable
console.log(greeting('Alice')); // Outputs: Hello, Alice!

What are the benefits of using first-class functions?

First-class functions allow for higher-order functions, enabling more flexible and reusable code. They also facilitate functional programming techniques.

Are there any limitations to first-class functions?

While first-class functions are powerful, they can lead to complex code if overused, making it harder to read and maintain.