How can I create private variables in JavaScript?

How can I create private variables in JavaScript?

In JavaScript, you can create private variables using closures or by using the ES6 class syntax with weak maps.

Can you explain how closures work for private variables?

Sure! A closure allows a function to access variables from its outer scope even after the outer function has finished executing.

Can you give me an example of using closures for private variables?

Absolutely! Here's a simple example:

function createCounter() {
    let count = 0; // private variable
    return {
        increment: function() { count++; },
        getCount: function() { return count; }
    };
}

const counter = createCounter();
counter.increment();
console.log(counter.getCount()); // Outputs: 1