Daniel W. Robert
Front-End Engineer. Always a student.
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Somewhat recently, I was looking through some example code (JavaScript) for a project and I came across the following syntax: I hadn’t seen this format before so it took me a second to parse through what it was doing. Essentially, this is just a fancy way of returning a single value from within an unnamed…
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Feature queries in CSS allow you to test whether a particular feature is supported by the browser before applying styles that use that feature. This means that you can take advantage of the latest features and functionality, while still ensuring that your site looks good on older browsers and devices. This is done by testing…
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UNIX-like operating systems (e.g., Linux, MacOS) have a handful of commands for managing your running programs (jobs) in the Terminal. From your Terminal application, you have the ability to manually send jobs to run in the background, bring them to the foreground, or suspend them. Below are the main job control commands with examples. List…
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Every time I’ve installed a new installation of WordPress, I would install the latest version. Naturally. And 99% of the time, why wouldn’t you? Today, however, I explicitly needed to test a release against an older version of WordPress Core. In doing so, I learned a couple of useful things. 1. WP CLI Version Flag…
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As of ES6, we are able to set default parameter values when defining a function, as shown below: This allows for named parameters to be initialized with default values if no value is present or it evaluates to undefined. If you want to call a function without passing one of the parameters, allowing it to fall…
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Node.js is a perfect runtime to create a CLI script that can run on any machine that has Node installed. A CLI program in Node is really just an ordinary Node.js app. In order to make the program available to be executed by your machine, we need to do a couple of small setup steps.…
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Typically, when I need to debug something with dev tools on a mobile layout, Chrome’s device toolbar is sufficient enough. Occasionally, it’s necessary to debug right on the device, since certain things differ between Safari and Chrome’s emulation. The downside is that, at the time of writing this, you can’t use dev tools on your…
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When debugging in JavaScript, browser extenstions can be a potential source of confusion. At the very least, they may add additional noise to the process. In order to make sure you’re not dealing with any extra code outside of your application, you can use Incognito Mode to browse in private. This disables all of your extensions…
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Object-Oriented Programming (OOP) is a popular programming paradigm that allows us a way to structure and maintain complex code. Unlike other programming languages that use class-based object orientation, JavaScript uses prototype-based object orientation. This difference may be a source of confustion for developers coming from a class-based language, especially when using the “syntactical sugar” of…
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In order for JavaScript to operate in the way that it does, it relies on three core components: I am not covering the concept of asynchronicity here but I will go over that in a future post(s). Memory & The Thread of Execution When a JavaScript program runs it goes through the code, line-by-line, and…