JavaScript Basics

What is JavaScript's official name?

• JavaScript

• TypeScript

• ECMAScript

• ScriptJS

Who invented JavaScript?

• Bill Gates

• Brendan Eich

• Tim Berners-Lee

• Steve Jobs

What is the purpose of JavaScript in web development?

• To create web servers

• To add interactivity to HTML pages

• To handle database connections

• To create operating systems

Which HTML tag is used to include JavaScript in a webpage?

What does `console.log()` do in JavaScript?

• Prints content to the web page

• Displays content in the browser’s console

• Creates a new HTML element

• Stops the script execution

What method is used to access an HTML element by its ID in JavaScript?

• document.getElementByClassName()

• document.getById()

• document.querySelector()

• document.getElementById()

What is `innerHTML` used for in JavaScript?

• To define a JavaScript function

• To insert JavaScript into an HTML file

• To change the content of an HTML element

• To call a JavaScript file

Which of the following is a correct variable declaration in JavaScript?

• var 1name;

• var name;

• var name#;

• var .name;

Which of these is a valid variable name in JavaScript?

• var employee-name;

• var 1employee;

• var _employee;

• var employee.name;

What data type can only represent two values, true or false?

• String

• Number

• Boolean

• Object