Frontend Web Development Bootcamp - Build a Twitter Clone - Variables in JavaScript

The video tutorial covers the basics of variables in JavaScript, including how to declare them using VAR, LET, and CONST. It explains the differences between these keywords and provides guidance on naming conventions for variables. The tutorial also highlights the importance of understanding variable types and how JavaScript handles them.

Which of the following is NOT a keyword used to declare variables in JavaScript?

• int

• const

• var

• let

What is a key characteristic of JavaScript as a programming language?

• It requires variable type declaration.

• It is a weakly typed language.

• It is a strongly typed language.

• It does not support dynamic typing.

Which of the following is a valid way to reassign a value to a variable declared with 'var'?

• Directly assign a new value.

• Use the 'var' keyword again.

• Use the 'const' keyword.

• Use the 'let' keyword.

Which naming convention is most commonly used for JavaScript variables?

• Snake case

• Camel case

• Kebab case

• Pascal case

Which of the following is NOT allowed in JavaScript variable names?

• Starting with a number

• Using underscores

• Using camel case

• Using dollar signs

What happens if you try to reassign a value to a variable declared with 'const'?

• The value is updated.

• The program continues without changes.

• An error is thrown.

• The variable is deleted.

What must you do when declaring a variable with 'const'?

• Reassign it frequently.

• Use it only once.

• Declare it without a value.

• Assign a value immediately.