Category: JavaScript

React Native

Getting Started with React Native

What is React Native React Native is a JavaScript framework for writing hybrid native mobile applications for both iOS and Android platforms. React Native uses the same JSX and React development approach you would take for developing for the browser, but applications get built as native applications in Objective-C (for iOS) or Java (for Android) by the React Native tooling. The key difference between React Native and other JS mobile frameworks such as Ionic or Cordova is that the result

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What's New in TypeScript

New TypeScript Features that Improve the Developer Experience

In many ways TypeScript is more like a powerful linting and documentation tool to author better JavaScript, rather than a separate programming language. One significant benefit of TypeScript is its deliberate support for some of the latest ECMAScript language features. Updating to new versions of TypeScript provides support for new language features but in a safe, backwards-compatible manner. But aside from keeping up JavaScript, TypeScript regularly offers improvements to the actual experience of writing TypeScript. This includes tools to assist

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What Makes Intern Different

What Makes Intern Different

Intern has always taken a different path in the pursuit of flexible automated web app testing. In the early days, Intern leveraged AMD modules when most other testing frameworks were not modular or only supported CommonJS modules, allowing Intern to support modular code in any environment. Intern was also one of the first tools to leverage Istanbul to support code coverage analysis, and its flexible architecture supports integration into a variety of CI/CD environments. Intern was one of the first

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The TSConf venue

Why did we start TSConf?

The ubiquity of JavaScript is undeniable; it’s the universal language of the web — a position that no other languages hold. JavaScript is flexible, able to adapt and grow as the web grows. But that flexibility is often the downfall of JavaScript; without a disciplined team working diligently to keep the codebase maintainable, JavaScript can fall apart. Enter TypeScript. A superset of JavaScript, TypeScript adds the option of typing, static analysis, and interfaces in order to create code that is

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HalfStack Phoenix

HalfStack Conference – Phoenix, January 2020

HalfStack is a series of tech conferences focused on half of the web development stack – specifically, the part you interface with. It lives up to its claims of being “an authentic, high value experience for attendees and sponsors focused on UI-centric JavaScript and web development.” Friday, January 17, 2020 Alamo Drafthouse, Chandler, Arizona The morning got off to a great start with comfortable seating and fine dining at the Alamo Drafthouse in Chandler. First up was Alex Blom talking

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Exploring the Network Information API

In 2007, we were invited to speak at the Apple WWDC event. At the time we didn’t know why we were invited. We later learned that because there was initially no native SDK, developers were advised to use JavaScript, HTML, and CSS to create iPhone apps, and were encouraged to attend our session. Obviously the world has changed quite a bit since 2007, but one of the questions we asked the Apple team at the time was: “What APIs would

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How to Pick a Web Mapping Library for your App

With the boom of location-based technologies like mobile location services and the Geolocation API in the browser, we have seen the growth of mapping and location inside of applications. Alongside this we have seen numerous mapping libraries appear for the web, allowing developers to build map based experiences into their apps. These libraries abstract away the complexity of things like geographic coordinate systems, ordering map tiles correctly, panning, zooming and various other behaviors. When it comes to building a web

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JSConf US 2019: Pushing JavaScript Beyond the Browser

As a first-time JSConf attendee, I happily embraced the welcoming culture and fun atmosphere – surfing, anyone? But I was even more impacted by the presentations centered around JavaScript expanding beyond the browser, using JavaScript to help others, and the focus on community. Of course I’m an avid JavaScript engineer and believer (why else would I be at JSConf), but I left feeling awed and inspired after seeing how progressive and impactful the JavaScript ecosystem can be. JavaScript Helps You

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Next Generation Virtual Scrolling

Rendering large data sets in the browser while optimizing for performance and accessibility is a complex problem. The current approach to handling long lists of data is using an infinite scroll pattern to incrementally load and render data just before the data enters the view. This approach comes with trade-offs that we will look at in detail as well as new features and standards that are coming down the pipe that will improve virtual scrolling in the future. Virtual scrolling

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