Inhalt: Reduce bugs and boost efficiency by using ESLint to catch common coding errors. In this course-the third and final installment in the ESLint series-learn about some of the most essential error-catching rules in ESLint, as well as how to configure them. Instructor Sasha Vodnik details how to configure rules to identify errors in code for functions; configure ESLint to identify issues with loops and in conditional structures; enable error checking for logic errors in for and if-else statements; identify empty blocks and unneeded debugging statements; alert you to sparse arrays and strings that seem to use template literal syntax; and catch common logic errors. Plus, Sasha provides a challenge that allows you to put your new skills to the test. Umfang: 00:31:31.00
Inhalt: Does your project style not adhere seamlessly to rules from a style guide? In this concise course-the second installment in the ESLint series-learn how to add and override rules to your ESLint configuration to ensure that you won't get flagged for "errors" that are really just aspects of your personal style. Instructor Sasha Vodnik shows how to customize your configuration by adding style rules to the predefined rules, as well as how to specify detailed configuration options for certain rules. Plus, learn how to identify and fix common configuration issues in ESLint. Umfang: 00:30:09.00
Inhalt: Errors crop up in even the most experienced JavaScript developer's code. ESLint can help you catch these issues early and often; it gives you a heads-up when your JavaScript code might work, but isn't quite right. This popular tool highlights errors as you're coding and allows you to write and enforce custom rules. In this concise course-the first in the ESLint series-learn how to integrate ESLint into your workflow to customize automatic error checking. Instructor Sasha Vodnik steps through how to add ESLint to a project and configure it to examine code style and automatically populate your configuration with rules from a style guide. Plus, learn how to configure and use the ESLint extension for your code editor. Umfang: 00:38:09.00
Inhalt: Asynchronous code is the foundation of most modern web experiences. It allows programs to switch between tasks and juggle multiple requests. However, without a thorough understanding of asynchronous programming, developers can write bloated code that works against the architecture of the web. Join Sasha Vodnik in this course, which explores asynchronous approaches to JavaScript programming using callbacks, promises, and the async/await operators in ES6. Learn what's going on line by line in your code, revisit basic structures like XMLHttpRequest (XHR) objects and setTimeout(), and discover how to use the new syntax options in JavaScript to tackle any coding challenge. Umfang: 01:31:31.00
Inhalt: JavaScript offers developers tremendous power, but also a wide variety of code style choices. Its evolution over decades and shifts in audience and approach have left communities fragmented and impeded code sharing. In this course, longtime coder and teacher Sasha Vodnik provides a core set of practices for creating code that can be read by more people than its creators. Learn about formatting details like commenting, punctuation, and spacing to maximize your code's ability to travel and thrive. Umfang: 01:50:47.00
Inhalt: You know you want to write JavaScript code for maximal consistency, maintainability, and comprehensibility. Logic is one thing-data is another. This course explores the tools and approaches for keeping your data and data structures clean, uncluttered, and efficient. Instructor Sasha Vodnik introduces best practices from industry-standard style guides and introduces tools that will help you flag deviations as well as format code as you write it. He discusses moderns strategies for creating and using variables, assigning values, typecasting values, and making comparisons. These are the techniques that experienced JavaScript programmers use to optimize the way their applications handle data and keep their code up to date with the latest standards. Umfang: 01:24:49.00
Inhalt: JavaScript uses C-based syntax, but the structures at its core, namely functions and classes, behave very differently than C behaves. Leveraging recommended techniques can help you develop JavaScript code that is more consistent and easier to maintain. In this course, explore best practices for architecting your programs. Consider ways that details can take paths that differ from other programming languages. Learn about creating well-built, organized, modular, and high-quality code by using a style guide, modern deployment tools, and strict mode. Discover how to carefully construct functions using more predictable expressions over declarations and by avoiding the modification of parameter values. Examine the dos-and don'ts-of "this" values and learn about which JavaScript features to avoid. Umfang: 01:45:13
Inhalt: Closures-a core concept for intermediate and advanced JavaScript developers-can be challenging for many developers to wrap their heads around. In this concise course, Sasha Vodnik breaks down this essential concept, explaining what closures are and how to use them in JavaScript. Sasha steps through the building blocks of closures and identifies what they look like in code. He also shares how to avoid unintended closures, use JavaScript features in place of closures, and implement the module pattern. Umfang: 00:52:46.00
Inhalt: The JavaScript approach to object-oriented programming feels alien to many developers. While prototypes are core tools for intermediate and advanced programming, even experienced developers may not understand how they work. This course explains how to write more efficient JavaScript code using the prototype chain. Learn fundamental concepts underlying prototypes, such as object literals and constructors, and discover how prototypes can reduce memory usage, improve code organization, and help you cascade changes site-wide with a single update. Instructor Sasha Vodnik also explains how to use ES6 classes to build prototypes with less code and more features. Umfang: 01:05:04.00
Inhalt: JSON has become the most common format for data interchange on the web, building from a JavaScript base to a wider set of API platforms. In this course, instructor Sasha Vodnik walks you through using the basic syntax of JSON and applying it in several common implementations to see how you can structure it with schemas and JSON-LD. Sasha begins by making sure you have a thorough understanding of how to build and debug JSON structures. After stepping through how to process JSON data, he shows you a variety of ways to use it. Next, Sasha covers techniques you can use to work with JSON, such as preventing data reuse and returning readable JSON data in JavaScript. He goes over how to create and validate JSON schema and how to work with schema generators. Sasha concludes with a discussion of JSON-LD and how you can use it to explain and map the structure of your data. Umfang: 02:13:01
Inhalt: JavaScript libraries like jQuery and frameworks like React have a lot of benefits to offer, but performance can be a tradeoff. Removing jQuery and React can improve site speed without impacting user experience. But many developers have never learned the equivalent code in JavaScript. This course teaches you how to program the same features and functionality with vanilla JavaScript. Instructor Sasha Vodnik starts with an app built with jQuery and React and replaces it piece by piece with vanilla JavaScript. He removes the dependencies and shows that the app still works, conducting performance tests to compare the start and end code. Topics include replacing DOM manipulation, replacing Ajax, replacing event listeners, and replacing simple animations, like show, hide, and toggle. The end result is a pure JavaScript app that is backwards and cross-browser compatible-no libraries necessary! Umfang: 01:44:47.00
Inhalt: All major browsers offer tools to examine the code of a webpage or app and evaluate its performance. Chrome Developer Tools (DevTools) is the industry standard. In this course, you can explore how Chrome DevTools work in actual testing and debugging scenarios and how you can add this useful collection of utilities to your development workflow. Each chapter digs into a different tool, including the Console, Elements, Network, and Application panels. Instructor Sasha Vodnik helps you test webpages and apps in different device modes and emulators, explore the DOM, inspect and modify HTML and CSS, edit source files, identify bottlenecks in page loads, access and manipulate cookies, and more. Plus, learn useful tricks and shortcuts for speeding up common debugging tasks. Umfang: 02:22:46.00
Inhalt: While JavaScript Object Notation (JSON) is a powerful tool for computer-to-computer communication, human developers have to untangle its many pieces to make that communication flow smoothly. Many apps and services produce and consume data in JSON format. Developers working with code that relies on JSON data must grapple with a number of common tasks that aren't necessarily straightforward. In this course, explore some basic best practices for working with JSON data, validating a JSON string using JSON Schema, and converting between JSON and data formatted in XML and YAML. Umfang: 01:27:25.00
Inhalt: Continue your coding journey as you dive deeper into the foundational concepts, practices, and terminology of programming. In this installment of the Programming Foundations series, instructor Sasha Vodnik goes beyond the basics, using Python to tackle a variety of intermediate and advanced concepts and skills you can add to your programming repertoire. Sasha covers creating and working with collections and loops, combining and manipulating strings, and using external code-all of which are critical concepts, regardless of which programming language you end up working with. He goes over several essential processes, such as choosing a code style and debugging. Plus, he digs into a few more advanced concepts, including memory management and multithreading. Umfang: 02:04:44.00
Inhalt: Ajax is a building block of the modern web. Ajax helps you communicate between your app and the server, and incorporate new content without reloading webpages-resulting in more interactive and high-performance apps. This course introduces both modern and legacy approaches for requesting and handling data and modifying webpage content with Ajax and vanilla JavaScript. JS expert Sasha Vodnik shows how to work with the Fetch and XMLHttpRequest (XHR) APIs, so you can see how Ajax is implemented in different codebases. He also shows how to optimize Ajax requests and responses within the browser, modify webpage content through the DOM, and handle any errors that result. Plus, learn how to move your API keys out of front end code and onto a proxy server to keep them secure. Umfang: 02:46:28.00
Inhalt: In network communications, knowing where something came from can often be as important as what it contains. Browsers can be particular about this, sometimes surprising developers when things can't be reached or connected. In this course, learn how same-origin policies play an important role in web security, so you can develop secure, interactive sites. Find out how to build Ajax requests using headers that affect the origin, how to work with server-only cookies, how to create secure communications between browser windows or tabs from the same origin, and more. Umfang: 01:54:34.00
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