This video tutorial takes JavaScript to the next level by demonstrating advanced techniques such as number and string methods, iterating through arrays and objects, and using AJAX requests. It includes practical code snippets and challenges to enhance learning. The tutorial also covers setting up a local machine, understanding file versus HTTP protocols, and accessing local storage. Source code is provided to encourage hands-on practice.

Which JavaScript method can be used to manipulate numbers?

• toUpperCase()

• parseInt()

• join()

• split()

What is a common way to iterate over an array in JavaScript?

• Using a switch statement

• Using a try-catch block

• Using a while loop

• Using a for loop

How can you update the background color randomly in JavaScript?

• By using a random number generator

• By using a fixed color code

• By using a CSS class

• By using a loop

What is the purpose of the fetch API in JavaScript?

• To handle exceptions

• To manipulate the DOM

• To make HTTP requests

• To store data locally

Which method is used to convert a JavaScript object into a JSON string?

• JSON.parse()

• JSON.toString()

• JSON.stringify()

• JSON.convert()