JavaScript Mastery from Zero to Hero - Prepare for Coding Interviews - Logging Variables with the Console in JavaScript

The video tutorial introduces the JavaScript console and the console.log method, demonstrating how to log variables and understand data types. It explains the creation and logging of string variables, emphasizing the importance of understanding variable declaration and data types. The tutorial encourages learners to take their time with the material and provides a preview of the next steps in learning JavaScript.

What is the primary purpose of using the console.log method in JavaScript?

• To create new variables

• To display data in the console

• To delete existing variables

• To format strings

Which of the following is a correct way to declare a string variable in JavaScript?

• var greeting = Hello

• var greeting = Hello';

• var greeting = Hello;

• var greeting = 'Hello';

What does the semicolon (;) signify in JavaScript?

• It starts a new line

• It declares a variable

• It ends an expression

• It comments out a line

If you replace a variable in a console.log statement, what will be displayed?

• The value stored in the variable

• An error message

• The name of the variable

• Nothing will be displayed

Why do we see 'peace Ooot' instead of 'goodbye' when logging the variable?

• Because 'peace Ooot' is a function

• Because 'goodbye' is a reserved keyword

• Because 'peace Ooot' is the value stored in the variable

• Because 'goodbye' is not a valid variable name