Introduction
An interview is an important part of the hiring process. It is one of the most reliable ways for an employer to filter out unsuitable candidates for a job post. As a JavaScript developer, you must prepare yourself before appearing in an interview, because it will increase your chances to get hired by a company, startup, or whatever. That will give you the confidence to do well in your technical interviews.
In this article, I decided to give you some beginner to intermediate JavaScript interview questions that you should know.
1. What is the DOM?
Sometimes in a technical interview, they ask about the definition of the DOM. So you have to make sure that you give them a good answer to that.
The **DOM **stands for **Document Object Model. **It is an interface or an API for HTML and XML documents. When the browser first reads (parses) our HTML document it creates a big object based on the HTML document, that is what we call the DOM. It is simply a data representation of the objects that comprise the structure and content of a document on the web. The DOM is used in JavaScript for interacting and modifying the DOM structure or specific elements and nodes.
Let’s say we have an HTML structure like this:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document Object Model</title>
</head>
<body>
<div>
<p>
<span></span>
</p>
<label></label>
<input>
</div>
</body>
</html>
The DOM equivalent would be like this:
DOM Elements.
#javascript #web-development #interview-questions
