JavaScript fundamentals

Included in the course

What you'll learn

• How to build programs using basic language constructs (conditions, loops, functions, and others)
• How to create programs consisting of several modules
• How to correctly analyze errors in the code and use print statement debugging when searching for them

Description

This course covers the fundamentals of the JavaScript language, and all the necessary general programming concepts, such as dealing with errors, debugging, and importing modules

Lessons

• 1

  Introduction

  Course overview

  theory
• 2

  Hello, World!

  Writing your first program.

  theory

  quiz

  exercise
• 3

  Statements

  Learn the nuts and bolts of building JavaScript programs.

  theory

  quiz

  exercise
• 4

  Arithmetic operations

  Using arithmetic operations in JavaScript.

  theory

  quiz

  exercise
• 5

  Formatting errors (syntax and linter)

  We'll explore different types of errors and how to solve them.

  theory

  quiz

  exercise
• 6

  Strings

  Learn how to work with strings.

  theory

  quiz

  exercise
• 7

  Variables

  Learn how to store data and reuse it.

  theory

  quiz

  exercise
• 8

  Defining with expressions

  Learn how to simplify code using variables.

  theory

  quiz

  exercise
• 9

  Naming

  Learn about how best to name variables.

  theory

  quiz

  exercise
• 10

  Interpolation

  We'll look at another way to handle strings in JavaScript.

  theory

  quiz

  exercise
• 11

  Getting characters from a string

  Learn how to extract chars from string.

  theory

  quiz

  exercise
• 12

  Data types

  What happens when you try multiplying a number by a string? Learn about data types in this lesson.

  theory

  quiz

  exercise
• 13

  Immutability and primitive data types

  Find out if JavaScript can transform strings or numbers.

  theory

  quiz

  exercise
• 14

  Functions and calls

  Learn how to use ready-made functions.

  theory

  quiz

  exercise
• 15

  Function signature

  Understand how a function takes and returns values.

  theory

  quiz

  exercise
• 16

  Function calls as an expression

  Learn how to use the function output.

  theory

  quiz

  exercise
• 17

  Functions with variadic parameters

  Get to know some advanced function features.

  theory

  quiz

  exercise
• 18

  Determinacy

  Investigate some properties of functions and learn more about how they work.

  theory

  quiz

  exercise
• 19

  Standard library

  Learn about the standard library.

  theory

  quiz

  exercise
• 20

  Properties and methods

  Learn how to use JavaScript's built-in data properties.

  theory

  quiz

  exercise
• 21

  Chaining methods

  Learn how to chain methods.

  theory

  quiz

  exercise
• 22

  Defining functions

  Learn how to create functions.

  theory

  quiz

  exercise
• 23

  Returning values

  Learn how to output results of functions.

  theory

  quiz

  exercise
• 24

  Function parameters

  Learn how to pass data to a function.

  theory

  quiz

  exercise
• 25

  Optional function parameters

  Learn how to set default values.

  theory

  quiz

  exercise
• 26

  Simplified function syntax

  Learn how to write concise code.

  theory

  quiz

  exercise
• 27

  Logic

  Learn what a logical type is and how to use logical operations.

  theory

  quiz

  exercise
• 28

  Logical operators

  Learn how to build composite conditions.

  theory

  quiz

  exercise
• 29

  Results of logical operations

  Dive deeper into logic.

  theory

  quiz

  exercise
• 30

  Conditionals

  Learn how to customize your program's behavior depending on different conditions.

  theory

  quiz

  exercise
• 31

  Ternary operator

  Learn how to write concise code for conditions.

  theory

  quiz

  exercise
• 32

  Switch

  Discover a special conditional statement for multiple options.

  theory

  quiz

  exercise
• 33

  while loop

  Learn how to write programs to perform repetitive actions.

  theory

  quiz

  exercise
• 34

  Data aggregation

  Get acquainted with a certain type of task that loops are especially useful for.

  theory

  quiz

  exercise
• 35

  Traversing a string in a loop

  Learn how to control the behavior of a program using a loop.

  theory

  quiz

  exercise
• 36

  Conditions inside loops

  Learn how to control the behavior of a program using a loop.

  theory

  quiz

  exercise
• 37

  Increment and decrement

  Learn about the unary operations.

  theory

  quiz

  exercise
• 38

  for loop

  Learn yet another loop statement in JavaScript.

  theory

  quiz

  exercise
• 39

  Modules

  Meet the modules, a way to divide programs into components for reusing

  theory

  quiz

  exercise
• 40

  Additional resources

  Some materials the Hexlet team have picked up. This will give you a more in-depth understanding of the topic

Challenges

We recommend working on these challenges after completing the course. They'll help you obtain more experience in programming and strengthen your new skills.