Are you planning to control Bluetooth devices from your web application? Read on and learn how to: connect to a device to send and receive data implement an auto-connect feature to connect the device without any user interaction The example application used in this article controls Bluetooth model cars that…

Something crashed? Just restart it! — Software bugs are all around us Computer programs will likely never exist without bugs… During a software’s life cycle,its development team tries to find and fix as many bugs as possible. That’s the way it is. But keep in mind, every code modification opens the door to the possibility of introducing more bugs. With sophisticated software…

This is part III of the “Manipulating video in a browser” series. In the previous articles, we experimented with the new “Insertable Streams for MediaStreamTrack” API to modify the web cam’s video stream before sending it further — to the WebRTC module, for example. The first attempt used JavaScript to…

The previous article of this series discussed the possibility of modifying video streams in a browser. The new “Insertable Streams for MediaStreamTrack API” makes it possible, by allowing the web-application to modify the frames before the stream is sent further. …

Have you ever wanted to modify the video streaming from your webcam? Now it’s possible! A new browser API recently landed in the webkit based browsers, it’s called “Insertable Streams for MediaStreamTrack API”. …

Eh… what? Recently, I participated in several frontend developer interviews. Unfortunately, the sad truth is that most candidates are confused about how “asynchronous” things work in JavaScript, what is considered as blocking or non-blocking code, and how (a)synchronicity relates to these. Let’s summarize the most common misconceptions and clarify them. …

To a man with a hammer, everything looks like a nail The title is a little bit provocative, isn’t it? Let’s see some of the ways we misuse one of our most valuable tools, the redux-saga library. Most projects based on this technology stack use “officially recommended” combine-reducer patterns to…

Asynchronous program flow is a well known feature in JavaScript environments. All of us extensively use callbacks, Promises at the implementation level. These structures often grow to an unmanageable beast, known as callback-, and Promise hell. Partly therefore a lot of projects choose the Redux-Saga Library to ease the handling…