A comprehensive tutorial — This is the first part of a comprehensive tutorial on constructing a JavaScript linter. A linter is a tool for checking source code. We will see the fundamental concepts and the source code of a real linter written in JavaScript, including algorithms for the tricky parts. Note: dirtyrat is the…

The right architecture for handling mouse and keyboard events — Simple Application The browser (JavaScript) is very helpful about handling user input. For example: var doneButton = document.getElementById(“done”) doneButton.onclick = function () { sendDataToServer() } This is a simple and straightforward code that works perfectly well for the following context. The user spends a minute filling out a form with his data.

It is easy, when we stick to the right principles — One of the (many) problems with writing CSS is its excessive flexibility. There are too many ways to achieve something (including obsolete features). Too many (counter-intuitive) rules, scattered in various places, producing a result, which sometimes falls very far from what was expected. Let’s compare CSS with HTML for one…

Part 8: Final — You can read the previous article here. This is the final article of the series. This series was not supposed to exist. It should be a simple article only. But that simple article generated so much skepticism and even sarcasm that I felt challenged to prove that I knew what…

Making a living in the stock market — This is the eighth article of a series. The previous article is “The Problems With Growth Stocks”. I haven’t found the necessary time to continue this article series as I wanted. So, I am finishing it today. For the closure, I will give you the quintessence of what I have…

A pragmatic study — This article is about how to fill the missing points of a line using JavaScript. We will start with naive algorithms and we will end with the Bresenham’s Line Algorithm. Where would I use this? A real case is a drawing tool. The user drags the mouse over the canvas and the tool draws a…

It is not just the error, it is where I found it too — Today I was setting up a small application on Google Application Engine. Things were working fine until I got to the part about adding a custom domain. G.A.E. it’s part of Google Cloud, which has hundreds of resources, so I spent some time until I found the right section. That…

Part 7: Mosaic Generator & Releasing The Library — You can read the previous article here. The Library Finally, today I am releasing the GoodbyeHtml library. This is the link for the library in GitHub. The Application (Demo) Today, I would like to explain more concepts, talk about the browser inside a browser, but I am a bit annoyed because of readers that keep…

Part 6: The Boxes & Beginning A Real Application — You can read the previous article here. Introduction The content I’ve promised for this article became too big. I had to split it. Also, I’ve spent more time than I expected writing the code. I made a LOT of refactorings, searching for the best design/greatest utility. I had finished the code…