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Dojo Tutorials

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    Observing Intersection Observers

    As developing for the web has matured and JavaScript engines have become faster, one area remains a significant bottleneck - rendering. It's because of this that so many of the recent development efforts have been focused around rendering, with virtual DOM being one of the more...

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    Get Browser Information with Intern

    You know how you can't remember something your spouse feels is really important but you can remember every funny line from that movie you saw when you were 17?  That's how I feel after months of writing selenium tests using the Intern framework -- I've forgotten...

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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...

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    Resize an Image Using Canvas, Drag and Drop and the File API

    Recently I was asked to create a user interface that allows someone to upload an image to a server (among other things) so that it could be used in the various web sites my company provides to its clients. Normally this would be an easy task—create a...

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    Dojo DeferredList

    Deferreds are all the rage in the JavaScript community these days and who can argue?  Deferreds, an object representing an asynchronous action, make working with AJAX requests incredibly easy -- no callback hell, no problem passing request information around.  What if you want to work with...

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    Clone Anything with JavaScript

    One topic or concept that causes confusion when developers start with JavaScript is the idea of passing objects by reference;  for example, setting two variables equal to the same object actually creates a reference to that same object.  Sending an object to a function and modify...

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    Using dojo/aspect

    Simply put: the Dojo Toolkit has tools that other JavaScript toolkits don't. One of those tools includes Dojo 1.7's aspect, a module that allows developers to react to function calls by executing another function before or after that call. This aspect resource originates...

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    File Uploads and C:\fakepath\

    I was recently working on a project that required providing an AJAX uploading widget to users. I decided to use Dojo's dojox.form.FileInput widget so the "Upload" button would look just like every other button within the web application. Everything worked great until I tested...

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    Dojo, Dijit, Dropdowns, and _aroundNode

    The Dojo Toolkit's awesome UI framework, Dijit, has loads of awesome widgets to allow developers to quickly create themed, feature-rich web applications. Dijit provides form widgets, layout widgets, dropdown-based widgets, and much more. What's nice about Dijit is that there's so much functionality provided...

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    JavaScript Coding with Class

    I've spent the last two weeks in London, eating fish'n'chips, drinking cup'o'tea, and being a hooligan at the Arsenal. Oh yeah, there was a MooTools hackathon too. The MooTools hackathon was hugely successful and I'll be providing more detail about what was...