Hello JavaScript

Basic concepts

Methodology

History

Script locations

Comments

Debugging

What is a variable?

Variable types

Dynamic typing

Variable declaration and Scopes

Arithmetic operators

Increment and decrement operators

Assignment operators

Comparison operators

Logical operators

Operator precedence

Big and small numbers

Number bases

Rounding

Creating strings

Escaping symbols

Concatenating strings

String templates

String length

Character and substring

Start and end

Changing string

Creating arrays

Accessing array items

Adding and removing array items

Converting between string and array

Array destructing

if condition

else branch

Conditions with logical operators

Nested conditions

switch condition

for loop

while and do...while loops

break and continue

What is an object?

Accessing object properties

Iterating object properties

Object destructing

"this" keyword

What is a function?

Built-in functions

Anonymous functions

Parameters and return value

Function scope

forEach

map

reduce

find and filter

every and some

Object references

Cloning objects

Merging objects

Constructor

Prototype

Rest parameters

Spread operator

Named parameters

Testing arguments

Catching exceptions

Throwing exceptions

Constructor

Getter and setter

Static fields and methods

Subclass

Creating sets

Adding and removing elements

Checking elements

Iterating over set

Creating maps

Setting and getting elements

Removing elements

Checking elements

Iterating over map

Creating dates

Getters and setters

Static methods

Formating dates

What are events?

Event handler

Event listeners

Form Events

Event objects

Preventing default behavior

Event bubbling and capturing

Source files

Formatting

Language features

Naming

Resources

Tools