What is HTML after all? HTML stands for HyperText Markup Language. HTML is responsible for the structure and content of a page, and tags are the building blocks for building a page....

What’s the output? . . . . . . . . . . . . . . . . . In JavaScript, the typeof operator always returns a string. So, even though typeof undefined evaluates to undefined, it’s a string and not the primitive undefined value....

Bubble sort algorithm doesn’t track the current state of the array. Even if it gets the fully sorted array as an input, the runtime will remain of the same O(n^2^) complexity....

Bubble sort, sometimes referred to as sinking sort, is a simple sorting algorithm that works by repeatedly stepping through the list to be sorted, comparing each pair of adjacent items and swapping them if they are in the wrong order....

All algorithms have 2 main characteristics: Amount of required memory. Execution time. These two are used to compare algorithms with each other. Some algorithms are faster, but require more memory, while others are vice versa....

What will be logged to the console? . . . . . . . . . . . . . . . . . Before we analyze the code snippet, let’s try to simplify it by removing the setTimeout....

To add a comment into an HTML document, there’s a special tag <!-- comment -->. There are times when you need to add comments to an HTML page. Comments are text that will be visible to your colleagues, but not visible to users who browse your website....

In JavaScript there are a couple of ways of rounding a number. The function Math.floor rounds the number down. It accepts a number n and returns the biggest integer that’s less than or equal n....

To insert an image into the HTML document, you can use the tag <image>. This HTML tag has 2 key attributes: src — defines the path to the image file alt — sets the alternative text....

Can you add multiple arrays in JavaScript? What’s the output? . . . . . . . . . . . . . . . . . . The function add(x, y, z) applies the + operator to the provided arguments....