getify Tutorials

    Kyle Simpson is Director of Web Futures at Getify Solutions, where he envisions and evangelizes what's next for Open Web technologies, especially JS. He writes, speaks, teaches, and codes OSS.

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    Expanding the Future (of Dev Tooling) with AI

    I'm writing to share some news that I'm genuinely excited about, not even just for me but for the rest of the developer community.Many of you know that I've been working with companies all over the world for nearly a decade, helping their developers learn JS...

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    I Don’t Hate Arrow Functions

    TL;DRArrow functions are fine for certain usages, but they have so many variations that they need to be carefully controlled to not break down the readability of the code.While arrow functions clearly have a ubiquitous community consensus (though not unanimous support!), it turns out there's a...

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    Thinking JavaScript

    I was teaching a JavaScript workshop the other day and one of the attendees asked me a JS brain teaser during the lunch break that really got me thinking. His claim was that he ran across it accidentally, but I'm a bit skeptical; it might just...

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    Functional Programming (FP) By Any Other Name…

    Don't worry, this is not YAMA (yet another monad article)! Instead, I want to talk about a library I've recently released that offers a helpful twist on typical functional programming ("FP") operations (like map(..), compose(..), etc). Before we jump in: if you're like me and have tried...

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    ES6: Features By Testing

    TL;DR Use the FeatureTests.io service to perform feature tests of ES6+ features. The results of these tests are cached by default in the user's browser, and shared across all sites the user visits that use this service. In the bootstrapper for your site/app, check the results of...

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    Fixing Coercion, Not The Symptoms

    TL;DR Your complaints of x == y behaviors being weird, buggy, or downright broken have all blamed == as the culprit. No, it's really not. == is pretty helpful, actually. The problems you're having are not with the == operator itself, but with the underlying values and how...

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    For and against `let`

    In this post I'm going to examine the case for (and perhaps against?) one of the new features coming in JavaScript ES6: the let keyword. let enables a new form of scoping not previously accessible generally to JS developers: block scoping. Function Scope Let's briefly review the basics...

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    Unwrapping JSON-P

    This is a quickie simple post on JavaScript techniques. We're going to look at how to unwrap the "P" function-call padding from a JSON-P string to get the JSON from it. Note: Obviously, the recent push toward ubiquity of CORS is making JSON-P less important...

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    Using String Replace in JavaScript

    This is a quickie simple post on JavaScript techniques. We're going to cover how to use the regular expression driven replace(..) with JavaScript string values. All string values have a replace(..) method available to them. This method allows you to pass a regular expression (or a string...

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    Combining JavaScript Arrays

    This is a quickie simple post on JavaScript techniques. We're going to cover different methods for combining/merging two JS arrays, and the pros/cons of each approach. Let's start with the scenario: The simple concatenation of a and b would, obviously, be: concat(..) The most common approach is: As you can see...