Terminology

Question 1

OOP

Answer 1

Object Oriented Programming

Question 2

TDD

Answer 2

Test-driven Development

Question 3

DOM

Answer 3

Document Object Model

Question 4

DOM Manipulation

Answer 4

The Document Object Model (DOM) represents that The Document Object Model (DOM) represents that same document so it can be manipulated. The DOM is an object-oriented representation of the web page, which can be modified with a scripting language such as JavaScript. The W3C DOM and WHATWG DOM standards are implemented in most modern browsers.Jan 26, 2020

Question 5

Events

Answer 5

Events are actions or occurrences that happen in the system you are programming, which the system tells you about so you can respond to them in some way if desired. For example, if the user clicks a button on a webpage, you might want to respond to that action by displaying an information box.

Question 6

Event handlers

Answer 6

Each available event has an event handler, which is a block of code (usually a JavaScript function that you as a programmer create) that will be run when the event fires. When such a block of code is defined to be run in response to an event firing, we say we are registering an event handler. Note that event handlers are sometimes called event listeners — they are pretty much interchangeable for our purposes, although strictly speaking, they work together. The listener listens out for the event happening, and the handler is the code that is run in response to it happening.

Question 7

AJAX

Answer 7

AJAX is not a programming language.

AJAX is a technique for accessing web servers from a web page.

AJAX stands for Asynchronous JavaScript And XML.

Question 8

CSS Selectors

Answer 8

CSS selectors are used to “find” (or select) the HTML elements you want to style.

We can divide CSS selectors into five categories:

Simple selectors (select elements based on name, id, class)
Combinator selectors (select elements based on a specific relationship between them)
Pseudo-class selectors (select elements based on a certain state)
Pseudo-elements selectors (select and style a part of an element)
Attribute selectors (select elements based on an attribute or attribute value)

Question 9

API

Answer 9

Application Programming Interfaces (APIs) are constructs made available in programming languages to allow developers to create complex functionality more easily. They abstract more complex code away from you, providing some easier syntax to use in its place.

As a real-world example, think about the electricity supply in your house, apartment, or other dwellings. If you want to use an appliance in your house, you simply plug it into a plug socket and it works. You don’t try to wire it directly into the power supply — to do so would be really inefficient and, if you are not an electrician, difficult and dangerous to attempt.

Question 10

constructor

Answer 10

Syntax
constructor([arguments]) { ... }

Description:
A constructor enables you to provide any custom initialization that must be done before any other methods can be called on an instantiated object.