Learn Chrome, Nuxt and Screen-reader

Optional chaining ?. in javascript is a new feature introduced in ES2020. Optional chaining changes the way properties are accessed from deeply nested objects. It fixes the problem of having to do multiple null checks when accessing long chain of object properties in javascript.

JavaScript® (often shortened to JS) is a lightweight, interpreted, object-oriented language with first-class functions, most known as the scripting language for Web pages, but used in many non-browser environments as well such as node.js or Apache CouchDB. It is a prototype-based, multi-paradigm scripting language that is dynamic, and supports object-oriented, imperative, and functional programming styles.

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Optional Chaining

A large number of people are unable to use the web effectively due to an impairment or disability.

As developers there are several tools and techniques we can use to make our web applications accessible, ensuring a great user experience that includes everyone.

We all agree that Accessibility is important. However, it’s a broad landscape and can be overwhelming figuring out where to start!

Erin Doyle is an expert in creating accessible React applications and has developed a course that will give you a concrete process for testing, refactoring, and building your applications with accessibility in mind.

After this course, you'll have a jump start on auditing and fixing accessibility issues in your applications and gain a better understanding of your target users and how to approach your web app design from their perspectives.


React is one of the web’s most popular frameworks for building JavaScript applications. 

If you know what you’re doing, React can drastically simplify how you build, use, and maintain code.

Whether you’re a React newbie or you’re ready for advanced techniques, you can level-up with egghead. Explore our in-depth courses, lessons, and community resources to build more powerful applications and crack open your career.

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Develop Accessible Web Apps with React

Chrome DevTools are incredibly useful for a frontend developer, sometimes we spend more time using them than our text editor of choice.

That's why it's so important to understand this tool better - those quick lessons will teach you things that will help you to become a more effective developer.

You will learn how to:

- **Use (experimental) CSS Overview to learn all about CSS used on a page in a minute**
- **Style console.log messages with CSS** - a _crucial_ skill for any senior developer (j/k)
- **Debug your code (on production and local environment) with logpoints**
- **Run a Lighthouse audit of your site**
- **Choose accessible colors for your website that have an AAA contrast ratio rating**
- **Force a DOM element state in Chrome DevTools**
- **Use Console utilities to make debugging easier**
- **Copy a network request as fetch or cURL with Chrome DevTools**

Have fun!

The Chrome Developer Tools (DevTools for short), are a set of web authoring and debugging tools built into Google Chrome.

chrome-devtools

Chrome DevTools tips & tricks

This course walks you through the steps of creating a News web app using Vue.js and the Nuxt framework. You will learn how to create dynamic pages for each section of your application and load, store, display, filter, and style the data. Then end result will be a News app with multiple category pages, comments for each section, and user pages.

Vue (pronounced /vjuː/, like view) is a progressive framework for building user interfaces. Unlike other monolithic frameworks, Vue is designed from the ground up to be incrementally adoptable. The core library is focused on the view layer only, and is very easy to pick up and integrate with other libraries or existing projects. On the other hand, Vue is also perfectly capable of powering sophisticated Single-Page Applications when used in combination with modern tooling and supporting libraries.

Create a News App with Vue.js and Nuxt

When you are first building your blog site, it can be difficult to choose what content management system you want to use, and choosing a new framework can be daunting. They can be overwhelming and have a large learning curve.

Open up your knowledge of a powerful Nuxt module with Nuxt Content! Nuxt has a low barrier of entry and you don't have to fight with a content management system or API keys. 

In this course, you will learn how to create your own blog with just Nuxt and a folder of markdown files. Ben will take you from creating your Nuxt project from scratch all the way to deploying your digital garden on Netlify. 

Ben Hong is one of the core team members over at Vue.js and has developed this course to give you a concrete understanding of Nuxt Content and how to build your blog efficiently. 

Build a Digital Garden with Nuxt and Nuxt Content Module

In this course we’ll take a deep look at the Elements panel in the chrome devtools. We’ll step through each button and tab on this panel and discuss how to use them to interact with your web application as it runs.

Debug the DOM in Chrome with the Devtools Elements Panel

This course examines the Sources panel in the Chrome DevTools, which allows you to see what files are responsible for the various things on the screen. Bundled into this panel, though, is the single most useful tool for any JavaScript developer - the JavaScript Debugger. We’ll use the Debugger to inspect JavaScript as it runs, allowing you to watch (and even interact with) the state of your application as it runs in ways that’ll blow your mind if you’ve mostly used console.log to debug your applications to this point. 

Debug JavaScript in Chrome with DevTool Sources

This course will examine the Network panel in Chrome DevTools. We’ll step through the request log, examining the various properties exposed. We’ll talk about timing, filtering, throttling and generally using the network panel to better understand the ways in which our applications exist within a connected context.

Debug HTTP with Chrome DevTools Network Panel

 AJAX allows us to send requests to the server from our javascript applications, rather than allowing the browser to directly request declaratively specified resources. Under the hood, though, AJAX requests are still just HTTP requests - and that means we can use the Network Panel in Chrome’s DevTools to inspect our AJAX operations!


Examine AJAX Requests with Chrome Devtools

To understand the Network DevTool, you have to understand what HTTP is and how it works. Let’s use the Network DevTool to inspect an HTTP request and its corresponding response so that we can understand what the browser is doing.

Analyze HTTP Requests and Responses with Chrome Devtools

Before each page loads, Nuxt supports pre-fetching data to render what you need on the server. This lesson walks you through using Nuxt's `fetch` to load data then save it in the Vuex store.

Load Data from APIs with Nuxt and Vuex

Most of today’s websites use optimized, compiled, minified and obfuscated javascript and CSS. Examining this stuff here has some severely limited utility, which is why when developing we rely on sourcemaps. We’ll set up a webpack workflow that uses sourcemaps to show you how they can help your debugging!

Unbundle your JavaScript with Source Maps in Chrome DevTools

screen-reader

There are many techniques for hiding content in user interfaces, and not all are created equal! Learn how different hiding techniques in HTML, CSS and ARIA impact keyboard and screen reader users in addition to visual display. As a bonus, we'll also take a look using a screen reader on a mobile device.

How Visible vs. Hidden Elements Affect Keyboard/Screen Reader Users

Learn to use the Style panel within the Element Inspector to examine and tweak the CSS rules applied to your application as it runs. 

Chrome Devtools: Elements - Debug with Style!

The Element Inspector in Chrome DevTools offers powerful integration with the console - learn how to programmatically navigate your selected element, how to search through the history and use CSS selectors to control what you're looking at and how to quickly and easily listen for events as you debug your application.

Chrome Devtools: Elements - Console Integration

Use the Event Listeners tab within the Elements panel to list all DOM Event listeners. This is useful to understand how and why your site is reacting to various forms of input.

Understand the Event Listeners Panel

The Elements panel includes a tool to show you how your site will look across a variety of devices. This can be tremendously helpful when troubleshooting layout issues on specific hardware that you don’t have access to, as well as general-purpose response design. You can mock different screen resolutions and behaviors to help put you into your users’ shoes.

Use the Device Toolbar to Emulate Different Screens

There are a variety of ways to trigger the javascript debugger. Use the elements panel to set breakpoints on DOM elements so that you can hit the debugger whenever an element’s children or attributes change, or when it’s removed.

Use DOM Break Points

The Vue-CLI helps you to quickly and easily setup new Vue projects. Nuxt.js is a library that helps you build server-rendered Vue.js applications. This lesson shows you how to use the nuxt/starter template with the Vue-CLI to quickly start a new project.

Setup a "Hello World" Server-Rendered Vue.js Application with the Vue-CLI and Nuxt

Most applications require state to be shared across the application. In the case of Nuxt, you'll share state across pages. Nuxt integrates easily with Vuex by simply adding JavaScript files in the `store` directory. This lesson walks you through setting up a basic store and using it in your template

Manage Vue.js State with Vuex and Nuxt

You commit changes to state in Vuex using defined `mutations`. You can easily access these state mutations in your template using `mapMutations`. This lesson shows you have to wire together your Vue.js template with your Vuex store using mutations and mapMutations.

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