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Using Array reduce


Every developer who specializes in any programming language will tell you there’s a powerful tool the language provides that they rarely use and wish they knew more about. For me, it’s Array.prototype.reduce. I quite enjoy the other Array methods like map, filter, and find, but reduce...

Collective #515


Into the Personal-Website-Verse * mailgo * Fontanello * GitHub Package Registry * What's new in JavaScript Collective #515 was written by Pedro Botelho and published on Codrops

Learn How to Create BCH Apps With Bitcoin.com’s Developer Platform


Are you a professional or a hobbyist programmer and want to create cryptocurrency enabled applications? Bitcoin.com’s Developer Platform offers resources for you to learn how to develop software based on the Bitcoin Cash (BCH) network. Also Read: Crypto Meets Techno and Binance Security...

Deploying a Client-Side Rendered create-react-app to Microsoft Azure


Deploying a React app to Microsoft Azure is simple. Except that... it isn’t. The devil is in the details. If you're looking to deploy a create-react-app — or a similar style front-end JavaScript framework that requires pushState-based routing — to Microsoft Azure, I believe this article will serve...

Weekly Platform News: Feature Policy, Signed Exchanges, iOS browsers


👋 Hey folks! This is the first edition of a new weekly update we'll be posting that covers timely news at the intersection of development standards and the tools that make them available on the web. We often talk about the pace of change in our industry. It's fast and touches everything...

The Thinking Behind Simplifying Event Handlers


Events are used to respond when a user clicks somewhere, focuses on a link with their keyboard, and changes the text in a form. When I first started learning JavaScript, I wrote complicated event listeners. More recently, I've learned how to reduce both the amount of code I write and the number...

New ECMAScript Modules in Node v12


If you’re familiar with popular JavaScript frontend frameworks like React, Angular, etc, then the concept of ECMAScript won’t be entirely new to you. ES Modules have the import and

Getting To Know The MutationObserver API


MutationObserver watches the DOM, specifically the places you tell it to, like: document.querySelector('#watch-this'); ...and it can tell you (trigger a callback) when stuff happens — like when a child is added, removed, changed, or a number of other things. I used it just the other day...

Type Conversion with JavaScript Arrays


JavaScript’s loose nature allows developers to employ amazing tricks to do just about anything you’d like. I’ve detailed how you can filter falsy values in arrays using a filter(Boolean) trick, but reader David Hibshman shared another trick for typecasting array values the same...

Split


Jeremy on the divide between the core languages of the web, and all the tooling that exists to produce code in those languages: On the one hand, you’ve got the raw materials of the web: HTML, CSS, and JavaScript. This is what users will ultimately interact with. On the other hand, you’ve got...

Flow Object.values(…)


JavaScript typing utilities, like Flow and TypeScript, have become popular in JavaScript apps of all sizes. As I mentioned in our Script & Style Show typing podcast, typing is a great way to implicitly implement documentation and validation. Flow isn’t always easy to perfect, however,...

The Many Ways of Getting Data Into Charts


Data is available everywhere nowadays, whether it’s in a plain text file, a REST API, an online Google sheet… you name it! It’s that variety of context that makes building graphs more than simply having a database in your local project — where there is data, there is a way. That’s pretty much what...

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