HTML CSS and JavaScript for Beginners - A Web Design Course - JavaScript Variables in Action

HTML CSS and JavaScript for Beginners - A Web Design Course - JavaScript Variables in Action

Assessment

Interactive Video

Information Technology (IT), Architecture

University

Practice Problem

Hard

Created by

Wayground Content

FREE Resource

The video tutorial covers JavaScript variables, including how to declare and name them, rules for naming, and the use of reserved words. It explains variable assignment, the use of the equals operator, and the importance of order in assignments. The tutorial also explores different data types in JavaScript, such as strings, numbers, and booleans, and how to work with them dynamically.

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7 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What characters can be used in JavaScript variable names?

Only letters and numbers

Letters, numbers, underscores, and dollar signs

Only letters and underscores

Letters, numbers, and spaces

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why can't JavaScript variable names start with a number?

It will be treated as a string

It will be ignored by the compiler

It will be treated as a number

It will cause a syntax error

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the result of assigning a new value to a variable in JavaScript?

The variable is updated with the new value

The variable becomes undefined

The variable retains its original value

The variable is deleted

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which operator is used to assign a value to a variable in JavaScript?

+

=

==

=>

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a dynamic data type in JavaScript?

A data type that cannot change

A data type that can change

A data type that is always a string

A data type that is always a number

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How can you include double quotes inside a string that is enclosed in double quotes?

Use single quotes instead

Use a backslash before the double quotes

Use curly braces

Use triple quotes

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is a boolean value in JavaScript?

"false"

10

false

"true"

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