What are some examples of composition in JavaScript?

What are some examples of composition in JavaScript?

Composition in JavaScript refers to combining simple functions to build more complex ones. For example, you can create a function that adds two numbers and another that multiplies them, then compose them to create a new function that adds and then multiplies.

Can you show me a code example of that?

Sure! Here's a simple example:

const add = (a, b) => a + b;
const multiply = (a, b) => a * b;

const addThenMultiply = (x, y, z) => multiply(add(x, y), z);

console.log(addThenMultiply(1, 2, 3)); // Outputs 9

What are the benefits of using composition over inheritance?

Composition allows for more flexible and reusable code. It avoids the complexities of inheritance, making it easier to manage and understand relationships between objects.

Are there any libraries that help with composition in JavaScript?

Yes, libraries like Lodash and Ramda provide utility functions that facilitate functional programming and composition in JavaScript.