Writing good code is important — writing code that’s easily human readable is a next level skill. It’s not often that APIs are introduced whose seemingly only useful function is making code more readable, but let me introduce you to JavaScript numeric separators: an API that lets developers use underscores to make numbers more readable!… Continue reading JavaScript Numeric Separators
Category: JS
Object.entries
Navigating and managing data structures is a really important skill for every level of engineer to have and improve upon. Over the years, the JavaScript language has continued to provide more methods for managing data structures, from Object.keys to Object.values and so on. One of my favorites is Object.entries, an API that provides the keys… Continue reading Object.entries
Monitor Your SEO Placement with SEObase
Search engine optimization is big business; both SEO experts and their customers want to track the effectiveness of their keywords, campaigns, and competition. To get and measure those results, however, you need the right tooling monitor those results. SEObase is an awesome tool for doing just that — monitoring keywords and results across search engines!… Continue reading Monitor Your SEO Placement with SEObase
Use Logpoints!
There’s sometimes a tribal attitude about how web developers should be debugging their code and solving problems. There’s the console.log loyalists, then there’s the debugger/breakpoint maximalists. I worked on the Firefox DevTools debugger for years and I can tell you my philosophy — use whichever tool helps you get the job done! I use console.log… Continue reading Use Logpoints!
Insert Cursor at Any Position at Command Line
As much as I enjoy writing lengthy pieces of JavaScript APIs, techniques, and other tech brilliance, I very much enjoy providing people quick tips to make their daily dev lives better. This is one such post. Oftentimes I’m working with long command line directives, and as you can imagine, I usually screw up the spelling… Continue reading Insert Cursor at Any Position at Command Line
Use Touch ID for sudo on Mac
The landscape of security is changing quite a bit. We’ve gone from basic username and password to 2FA, facial recognition, fingerprint recognition, and so on. Hell, my Mac unlocks simply when I have my Apple Watch near by. In the end, I probably use the Mac fingerprint key the most. One functionality that still requires… Continue reading Use Touch ID for sudo on Mac
Open a Browser Tab with DevTools Open by Default
Using command line flags is a great way to subtly improve productivity. Whether saving yourself keystrokes or enabling specific features, it’s very much worth knowing the application flags available to you. To launch a new tab with DevTools in Chrome, you can use the –auto-open-devtools-for-tabs command line flag: /Applications/Google Chrome Canary.app/Contents/MacOS/Google Chrome Canary –auto-open-devtools-for-tabs https://davidwalsh.name… Continue reading Open a Browser Tab with DevTools Open by Default
Return a Default Value with Promises Using catch
Last week I tweeted all of you looking for your best JavaScript Array and Promise tricks, and as always, it didn’t disappoint — I learned quite a bit! Today’s JavaScript Promise trick is brought to you by Claudio Semeraro: how to use catch to set a default value instead of a try/catch: // Instead of… Continue reading Return a Default Value with Promises Using catch
React.isValidElement
Knowing what input type you’ve received is hugely important in JavaScript, which is a big reason for Flow and TypeScript’s rise. One such case where it’s useful to know what an object represents is if the input is a string or a React element. To detect if an object is a React element, you can… Continue reading React.isValidElement
What I’m Thankful For: 2020 Edition
My parents loathe when I use poor language but luckily they don’t read this blog so I’ll just be blunt: 2020 has been an absolute shit show. COVID-19 has been a world-wide source of devastation to lives, jobs, and our quality of life. That said, I’ve found myself feeling incredibly grateful at the end. Despite… Continue reading What I’m Thankful For: 2020 Edition
Node isConnected
Every so often I discover a property in JavaScript objects that I didn’t know existed, oftentimes using another trick to accomplish the same functionality. One such property I just learned about was isConnected, a node property that attached to a context (i.e. document). Here’s how to use Node.prototype.isConnected: const el = document.createElement(‘div’); el.isConnected; // false… Continue reading Node isConnected
Detect Changed Files with git
There are numerous reasons to want to know which files have been added or modified in a git repository, one of which is your text editor highlighting those files. Another use case is running tasks against only files which are presently changed, like lint or other validation routines. So how can we identify files which… Continue reading Detect Changed Files with git
How to Detect When a Sticky Element Gets Pinned
The need for position: sticky was around for years before it was implemented natively, and I can boast that I implemented it with JavaScript and scroll events for ages. Eventually we got position: sticky, and it works well from a visual perspective, but I wondered how can we determine when the element actually became pinned… Continue reading How to Detect When a Sticky Element Gets Pinned
Remove the Search Input Clear(x) Icon
I really appreciate the amount of different <input> elements we’ve received over the past decade. These elements don’t just bring a new semantic advantage, but also provide UI helpers, which in many cases are useful. In a recent case, I found a UI element not useful: the x (clear) icon in <input type=”search” /> elements.… Continue reading Remove the Search Input Clear(x) Icon
5 Awesome JavaScript Promise Tricks
The Promise API changed the game in JavaScript. We went from abusing setTimeouts and settling for synchronous operations to doing everything possible to leverage this new async API. Let’s check out a handful of awesome Promise API tricks! One problem we instantly complained about with promises was not being able to cancel them. A simple… Continue reading 5 Awesome JavaScript Promise Tricks
React v16.13.0 – React Blog
Today we are releasing React 16.13.0. It contains bugfixes and new deprecation warnings to help prepare for a future major release. New Warnings Warnings for some updates during render A React component should not cause side effects in other components during rendering. It is supported to call setState during render, but only for the same… Continue reading React v16.13.0 – React Blog
Introducing the New React DevTools – React Blog
We are excited to announce a new release of the React Developer Tools, available today in Chrome, Firefox, and (Chromium) Edge! What’s changed? A lot has changed in version 4! At a high level, this new version should offer significant performance gains and an improved navigation experience. It also offers full support for React Hooks,… Continue reading Introducing the New React DevTools – React Blog
Flatpickr: A lightweight javascript datetime picker
Flatpickr is a new plugin built with javascript (zero dependencies) that generates design agnostic datetime pickers to be included in your website or app. Very powerful and lightweight (less than 15kb), it is definitely worth a try. Project page View on Github
Chart.js A Simple yet flexible JavaScript charting for designers & developers
Chart.js was first introduced in year 2013, for 3 years of intensive development by many contributors, it has became quite a powerful open source Javascript charting plugin. It’s designed for both developers and designers. It supports 8 types of charts – Line, Bar, Radar, Polar Area, Pie & Doughnut, Scales charts. With version 2.0, you… Continue reading Chart.js A Simple yet flexible JavaScript charting for designers & developers
Animated Animals in CSS and SVG
Learn some interesting animation techniques involving Sass and SVG filters for realistic motion effects on the example of animated animals. View demo Download source Today we want to show you how the clever use of HTML, CSS sequenced animations, and SVG filters can bring to life one of the most unlikely (yet adorable) things to… Continue reading Animated Animals in CSS and SVG
Create A Little Easter Egg in Your Website with Dom-Animator
Web developer is not boring, sometimes we like to sneak in some funny comment, interesting variable names, hidden features or hidden images some where in the website, hopefully someone will notice it and have a good laugh. Here we have a nifty Javascript library called Dom-Animator. You can use it to show small ascii animations… Continue reading Create A Little Easter Egg in Your Website with Dom-Animator
Easy to Use Dialog System for Modern Web Apps
BasicModal is a dialog-system for modern web-apps. It includes everything you need to display information, ask questions or request input from the user. Modals can be chained, so you can easily build a setup-assistant or show dialogs in a predefined order. Invalid input can be highlighted and handled using the included function. BasicModal uses SASS,… Continue reading Easy to Use Dialog System for Modern Web Apps
20 Interesting JavaScript and CSS Libraries for February 2016
The world of web development keeps expanding as new frameworks, libraries and plugins are created everyday. To keep you up to date with all the cool toys, we made this collection of our favorite JavaScript and CSS tools you should try in February 2016. Super Simple Slider Super simple slider is jQuery plugin which provides you with a functional and… Continue reading 20 Interesting JavaScript and CSS Libraries for February 2016
9 Useful Javascript Color libraries
Here are 9 useful Javascript libraries which allow you to perform many different manipulations on colors. Colorify Colorify is a script written in Javascript, that allows you to extract colors from images, and manipulates them. From a simple plain color, based on the dominant color, to a beautiful gradient based on the image edges colors,… Continue reading 9 Useful Javascript Color libraries