JavaScript Tutorials

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    Get a Random Array Item with JavaScript

    JavaScript Arrays are probably my favorite primitive in JavaScript. You can do all sorts of awesome things with arrays: get unique values, clone them, empty them, etc. What about getting a random value from an array?To get a random item from...

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    Legacy String Methods for Generating HTML

    I'm always really excited to see new methods on JavaScript primitives. These additions are acknowledgement that the language needs to evolve and that we're doing exciting new things. That being said, I somehow just discovered some legacy String methods that you probably shouldn't use...

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    Interview with an Intiface Haptics Engineer

    I was recently re-reading my Interview with a PornHub Web Developer and one bit I started thinking about was the VR question and the idea of making users not just see but feel` something. The haptic feedback of VR games is what really sets...

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    Input valueAsNumber

    Every once in a while I learn about a JavaScript property that I wish I had known about years earlier -- valueAsNumber is one of them. The valueAsNumber provides the value of an input[type=number] as a Number type, instead of the traditional string representation when...

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    Detect Dark Mode Preference with JavaScript

    Seemingly every website, dapp, and app offers a dark mode preference, and thank goodness. Dark mode is especially useful when I'm doing late night coding, or even worse, trading into altcoins. I'm presently working on implementing a dark theme on MetaMask and it got...

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    JavaScript Class Privates

    One of my aspects of JavaScript that drew me to it as a young developers was that its syntax was loose and I could code quickly. As you gain experience as an engineer, you start to realize that some traditional coding structure is a good thing...

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    Immediately Executing setInterval with JavaScript

    Employing setInterval for condition polling has really been useful over the years. Whether polling on the client or server sides, being reactive to specific conditions helps to improve user experience. One task I recently needed to complete required that my setInterval immediately execute and...

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    JavaScript String replaceAll

    Replacing a substring of text within a larger string has always been misleading in JavaScript. I wrote Replace All Occurrences of a String in JavaScript years ago and it's still one of my most read articles. The confusion lies in that replace only...

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    navigator.clipboard API

    Reading from and writing to the user's clipboard can be both a very useful and dangerous capability. Used correctly and it's a huge convenience to the user; used dubiously and the user could suffer catastrophic consequences. Imagine a wrong account number or wallet address...

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    Array.prototype.at

    Working with arrays is an essential skill in any programming language, especially JavaScript, as we continue to rely on external data APIs. JavaScript has added methods like find and `findIndex recently, but one syntax I love from languages like Python is retrieving values by negative indexes.When...