JavaScript Masterclass 2021: Modern & Comprehensive

How to define variables and its associated rules

Difference between keyword let and const

Three simple rules for valid variable names

Types of Data Types in JavaScript: Primitive (single value) data type and reference (complex value) data type.

Creating empty values using primitive data type.

Understanding primitive data type: String

Understanding Template Strings

Understanding String Prototype Methods.

Understanding primitive data type: Number.

Understanding Math Library methods.

Understanding primitive data type: Symbol

Converting one primitive data type to another primitive data type.

Coding exercise on primitive data types

Solutions for the coding exercise of primitive data types

Introduction for Section 4: Operators and Statements

Understanding math operators, comparison operators, logical operators and conditional operators.

Understanding if/else statement 

Understanding switch statement

Understanding loops

Understanding while loop

Coding Exercise: Given a positive integer, check if the number is prime or not. A prime is a natural number greater than 1 that has no positive divisors other than 1 and itself.

Coding Solution to prime number coding exercise.

Section Introduction of Scope and Scope Chain

Understanding Global Scope

Understanding Block Scope

Understanding Lexical Scope

Understanding scope chain

Section Introduction of Arrays and Objects

Introduction to JavaScript Arrays.

Mutating JavaScript Arrays. Adding and removing values from an array. 

Understanding Multidimensional Arrays

Understanding iteration through an array using for loop and forEach loop.

Introducing JavaScript Objects.

Iterating through object properties using the "for in" loop. 

Understanding newly introduced Destructuring assignment feature in JavaScript. 

Understanding newly introduced reference data type: Set.

Understanding newly introduced reference data type: Maps and WeakMaps.

Coding exercise on reference data types.

Coding solution on reference data types.

Introducing functions in JavaScript. Understanding differences between function declaration and function expression.

Understanding spread operator and rest parameters.   

Setting default parameters for functions in ES6

Understanding callback functions and their applications.

Understanding array methods: map, filter, and reduce.

Understanding array method: sort.  For example: sort ascending/descending order,  sort array of objects.   

Understanding array methods: some() and every()

Coding exercise: callback function 

Coding solution: callback function.

Introducing prototype based Inheritance.

Function constructors behaves like classes in JavaScript.

Extending function constructor is more like creating sub-classes from the main-class.

Classes in JavaScript are very different  than classes in classical inheritance.   They are really syntactical sugar, underneath they are using function constructors and prototypal inheritance.   

Understanding sub-classes.

Arrow functions are function without its own 'this'. This is more like regular functions in other programming languages. 

It's important to understand this keyword in object literals so that we can use call, apply, and bind to borrow methods from one object to be used on other objects.

To understand power of functional programming, you must understand call, apply, and bind. Using these, you can mix and match functionalities of objects. 

Understanding closures. it's the root of functional programming as it allows JavaScript to be non-blocking.   

You can chain methods to achieve shorter syntax.   

Understanding blocking vs. non-blocking.

If you want to create wait, or you want to do something over an over forever, use setTimeout and setInterval in that order. 

Promises are the heart of making API calls in JavaScript, with reasonably simple syntax.

If you want to block something in the non-blocking environment, use async await.   It doesn't block everything, you can control things you need to block by putting them in an async function.   

Want to get data from server or send some data to server?  You will need Rest API, it's a stateless protocol that is very popular.

Understanding REST API methods: get, post, put, patch, and delete.

Understanding newly introduced fetch API.