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    Merge Arrays with JavaScript

    Merging arrays is a fairly common occurrence.  I remember when I worked a lot with PHP I would use array_merge() all the time.  I found myself merging arrays often when handling form submission. JavaScript has a simple, native function for merging arrays (concat) but it produces a new array.

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    GSAP + SVG for Power Users: Motion Along A Path

    Now that the GreenSock API is picking up steam, there are many tutorials and Getting Started guides out there to provide good introductions to the library, not to mention GreenSock's own Forum and Documentation. This article isn't intended for beginners, but rather a...

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    Crafting a 3D React Carousel

    There is something in me that is amazed but beautiful 3D interfaces. And it doesn't matter whether they're functional like Gyroscope features menu, technology demonstrators like the amazing periodic table demo from famous or they're artistic representation pushing the limits of...

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    Collaborative Editing in JavaScript: An Intro to Operational Transformation

    I've set out to build a robust collaborative code editor for the web. It's called Codr, and it lets developers work together in real time - like Google Docs for code. For web developers, Codr doubles as a shared reactive work surface where every change is...

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    Five JavaScript Errors That Attack Without Warning

    "The Web is the most hostile software engineering environment imaginable." — Douglas Crockford We run web applications in a hostile environment. With each page-view, our JavaScript is deployed over an unpredictable network into a browser that we do not control. It's scary, but we've broken down five JavaScript...

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    Add Styles to Console Statements

    I was recently checking out Google Plus because they implement some awesome effects.  I opened the console and same the following message: WARNING! Using this console may allow attackers to impersonate you and steal your information using an attack called Self-XSS. Do not enter or paste code that you...

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    Intro to JavaScript Animation

    Despite what many developers believe, CSS-based animation is not the only performant way to animate on the web. There's also JavaScript—and JS has some incredible advantages. By abandoning JavaScript for CSS, like many developers do, we are bloating our stylesheets, sacrificing animation timing control, and forgoing physics-based...

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    Basics of Monkey Patching

    As one of the MooTools team and someone who worked with the Dojo Toolkit for years, I quickly learned one lesson:  you never modify the source of a library when using it on a given web app.  Doing so makes upgrades of the library a nightmare and...

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    7 Essential JavaScript Functions

    I remember the early days of JavaScript where you needed a simple function for just about everything because the browser vendors implemented features differently, and not just edge features, basic features, like addEventListener and attachEvent.  Times have changed but there are still a few functions each developer should...

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    Loading Static Templates for Intern Testing

    I use Intern by SitePen for all of my JavaScript functional testing.  Intern has loads of features other functional test frameworks don't and it's completely Promise-based -- something I got very used to when I used the Dojo Toolkit every day. Async test creation can...