What are some advanced vanilla JavaScript techniques I should know?

What are some advanced vanilla JavaScript techniques I should know?

Some advanced techniques include closures, promises, async/await, and the module pattern. Would you like to dive deeper into any of these?

Can you explain closures?

Sure! A closure is a function that retains access to its lexical scope, even when the function is executed outside that scope. This is useful for data encapsulation.

How do I use promises effectively?

To use promises effectively, always return a promise from your functions, and use .then() for handling resolved values and .catch() for errors. This helps in managing asynchronous operations.

What is the module pattern?

The module pattern is a design pattern that helps in organizing code by creating private and public members. It allows for better encapsulation and avoids polluting the global scope.

Can you give me an example of async/await?

Certainly! Here's a simple example:

async function fetchData() {
    try {
        const response = await fetch('https://api.example.com/data');
        const data = await response.json();
        console.log(data);
    } catch (error) {
        console.error('Error fetching data:', error);
    }
}

This makes asynchronous code look more like synchronous code, improving readability.