JavaScript Mastery from Zero to Hero - Prepare for Coding Interviews - Write Your Very First Variable in JavaScript

The video tutorial covers the basics of data types and variables, focusing on JavaScript. It explains how to declare variables using the 'var' keyword and provides a detailed example of creating a string variable. The tutorial also discusses the importance of using quotations for string values and the potential errors that can occur if they are omitted.

What keyword is used to declare a variable in JavaScript?

• let

• const

• int

• var

In JavaScript, what is required to define a string?

• Quotations

• Parentheses

• Curly braces

• Square brackets

What happens if you omit quotations when assigning a string in JavaScript?

• The string is assigned correctly

• The string is converted to a number

• The variable is assigned to another variable

• An error occurs

What is the purpose of the '=' symbol in JavaScript variable declaration?

• To compare two values

• To assign a value to a variable

• To declare a new variable

• To end a statement

Which of the following is a correct way to declare a string variable named 'greeting' with the value 'hello'?

• var greeting = (hello);

• var greeting = hello;

• var greeting = 'hello';

• var 'greeting' = hello;