Gain insights into modern JavaScript, focusing on impactful syntax and practical usage. Discover essential language features and 51 valuable tips to enhance your productivity as a developer.

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In this course, you’ll learn to write modern JavaScript from the ground up. But instead of going over every possible edge case, you’ll focus on the syntax that has a significant impact in your day-to-day work. As you review each construct, you’ll learn not just how to use it, but, more importantly, when to.

Your time is valuable, and this course, based on the Pragmatic Programmers’ book, Simplifying JavaScript, covers all the most important language features. And with 51 tips in total, you'll be able to jump into and out of this course easily. Before you know it, you'll be a productive and modern JavaScript developer.

Simplifying JavaScript: A Handy Guide for Software Engineers

## About Modern JavaScript

Ever get the feeling you’ve woken up and everything’s different? If you’ve
looked at modern JavaScript, you may feel like you woke up in a new world
where nothing’s the same.

Yesterday, you were tweaking a simple jQuery accordion. Today, you look at
some JavaScript code and the ubiquitous jQuery `$` operator is gone. In its
place are lots of strange dots (`...`) and strange symbols (`=>`) (the **spread** operator
and **arrow** functions, as you’ll soon learn). Sure, some things look familiar,
such as class, but even that seems to be unpredictable (where are the private
methods?).

Are you perplexed? Maybe a little excited? Well, I have good news for you:
Everything has changed for the better.

When the **ECMAScript 6** spec was released—**ES6** for short—JavaScript code
changed dramatically. The changes were so substantial that after reading this
course you’ll be able to tell at a glance which code was written with pre-ES6
syntax and which code was written with post-ES6 syntax. JavaScript now is
different. Modern JavaScript is any code composed with post-ES6 syntax.


Modern JavaScript is a pleasure to write. I’m a long-time unrepentant Java-
Script fan, but I’ll admit that I found the old syntax a little clunky at times,
and it was pretty hard to defend. Modern JavaScript is better. But it’s changed
significantly, and catching up can be hard.

# About Modern JavaScript

Ever get the feeling you’ve woken up and everything’s different? If you’ve
looked at modern JavaScript, you may feel like you woke up in a new world
where nothing’s the same.

Yesterday, you were tweaking a simple jQuery accordion. Today, you look at
some JavaScript code and the ubiquitous jQuery `$` operator is gone. In its
place are lots of strange dots (`...`) and strange symbols (`=>`) (the **spread** operator
and **arrow** functions, as you’ll soon learn). Sure, some things look familiar,
such as class, but even that seems to be unpredictable (where are the private
methods?).

Are you perplexed? Maybe a little excited? Well, I have good news for you:
Everything has changed for the better.

When the **ECMAScript 6** spec was released—**ES6** for short—JavaScript code
changed dramatically. The changes were so substantial that after reading this
course you’ll be able to tell at a glance which code was written with pre-ES6
syntax and which code was written with post-ES6 syntax. JavaScript now is
different. Modern JavaScript is any code composed with post-ES6 syntax.


Modern JavaScript is a pleasure to write. I’m a long-time unrepentant Java-
Script fan, but I’ll admit that I found the old syntax a little clunky at times,
and it was pretty hard to defend. Modern JavaScript is better. But it’s changed
significantly, and catching up can be hard.

# About Modern JavaScript

Ever get the feeling you’ve woken up and everything’s different? If you’ve
looked at modern JavaScript, you may feel like you woke up in a new world
where nothing’s the same.

Yesterday, you were tweaking a simple jQuery accordion. Today, you look at
some JavaScript code and the ubiquitous jQuery `＄` operator is gone. In its
place are lots of strange dots (`...`) and strange symbols (`=>`) (the **spread** operator
and **arrow** functions, as you’ll soon learn). Sure, some things look familiar,
such as class, but even that seems to be unpredictable (where are the private
methods?).

Are you perplexed? Maybe a little excited? Well, I have good news for you:
Everything has changed for the better.

When the **ECMAScript 6** spec was released—**ES6** for short—JavaScript code
changed dramatically. The changes were so substantial that after reading this
course you’ll be able to tell at a glance which code was written with pre-ES6
syntax and which code was written with post-ES6 syntax. JavaScript now is
different. Modern JavaScript is any code composed with post-ES6 syntax.


Modern JavaScript is a pleasure to write. I’m a long-time unrepentant Java-
Script fan, but I’ll admit that I found the old syntax a little clunky at times,
and it was pretty hard to defend. Modern JavaScript is better. But it’s changed
significantly, and catching up can be hard.

This lesson discusses the use of modern JavaScript in this course.

Introduction

Signal Intention with Variable Assignment

Manage Data Collections with Arrays

Maximize Code Clarity with Special Collections

Write Clear Conditionals

Simplify Loops

Clean Up Parameters and Return Statements

Build Flexible Functions

Keep Interfaces Clear with Classes

Access External Data

Gather Related Files with Component Architecture

Build the Frontend of a Financial Application Using React

Modern JavaScript

About Modern JavaScript