How can I improve the performance of my JavaScript functions?

How can I improve the performance of my JavaScript functions?

To improve performance, consider using techniques like memoization, avoiding global variables, and minimizing DOM manipulations.

What is memoization and how does it help?

Memoization is a technique that stores the results of expensive function calls and returns the cached result when the same inputs occur again.

Are there any specific tools to analyze JavaScript performance?

Yes, tools like Chrome DevTools, Lighthouse, and WebPageTest can help you analyze and optimize JavaScript performance.

Can you give me an example of a memoized function?

Sure! Here's a simple example:

const memoize = (fn) => {
    const cache = {};
    return (...args) => {
        const key = JSON.stringify(args);
        if (cache[key]) {
            return cache[key];
        }
        const result = fn(...args);
        cache[key] = result;
        return result;
    };
};

const add = (a, b) => a + b;
const memoizedAdd = memoize(add);