A function in JavaScript is a set of statements that performs a task or calculates a value and return it based on the input which is been given to it.

There are two ways of many using which you can loop over the iterables in JavaScript.

The Fetch API as we all know is the modern replacement to the good old XHRHttpRequest AKA Ajax as it’s much simpler and uses promises. It’s great to make API calls without adding any third-party library overhead.

Although the Arrow functions in JavaScript are a great way to make your code concise and more readable than the regular functions, there are some important things that you should consider before using arrow functions which can even break your application if you’re not aware of this.

The usual way of adding event-listener on certain elements is using the addEventListener method on the element. For instance, if you want to register a click event on an element with id checkoutBtn, you can do it like so.

I was working on implementing the Konami code easter egg on this blog and there was this need where I need to stop the scrolling only when the previous two presses by the user are ArrowUp.

So, the other day, I was going through my Twitter feed and I saw this tweet. This user had explored an easter egg on the newly designed Stripe.com’s website.

You might be aware of how to set default values for function parameters in JavaScript. For instance, if you want to set the default value for a parameter, you can do it like so.

While working on Your First Commit Ever, there arised a requirement in which I had to update/change the URL’s query paramter based on the user input.

There comes a scenario when you might want to check which operating system the device is running. For instance, when you want to set device-specific download links. For windows, .exe file, for macOS, .dmg file and so on.

JavaScript amazes me everyday when I find something can be done using native JavaScript instead of using heavy-weight libraries or inventing my own functions.

There might be cases where you would like to check if the device on which the website is loading is connected to the internet or not. For instance, this can be used to show the user the message if their device is offline or to disable some functionality of the application if the device is offline.

You’ve probably seen or have used this feature where you can upload files by dropping the selected files into the specific area. For example, how Gmail handles this while drafting emails.

Implementing a Dark mode in applications is all the rage these days. And you can provide a toggle to switch between Dark/Light mode to users like the one I’ve implemented on my Notepad app.

I was working on polishing my Notepad app this fine quarantine afternoon. One feature that I was planning to add was an ability to download the content of the notes/text as a text file when user click the specified download button.

There are several ways to iterate over things in JavaScript. Most notable way is to use loops. Loop constructs includes for, forEach, do...while, while, for...in and for...of. All these constructs loops over synchronous iterables such as arrays, objects, strings etc.

JavaScript is not a statically typed language. A language is a statically typed if the type of a variable is known at compile-time instead of at run-time. Common examples of statically-typed languages include Java, C, C++, Swift, Kotlin and Scala.

When using React component using ES6 classes, you must have encountered this phenomenon where you have to explicitly bind the class function and then pass it to the even such as onClick. For instance, take the following example.

Working with Arrays in JavaScript is sometimes painful as there aren’t a lot of native functions/methods available to carry out common operations on arrays. For instance, an operation as simple as removing an element from an array takes a lot of amount of code. Check this.

There are always multiple ways of doing things. Programming is no different. For instance, in JavaScript, what would you do if you want to get the property of an object running some operation before returning it? Take this example.

A sometime ago I tried my hands on implementing some of the PHP’s native functions in native JavaScript. The result is quite interesting list of JavaScript functions you’ve never asked about.

Progressive Web Apps are great when you need to achieve things like offline capabilities, push notifications, background-sync and to give your website an overall app-like experience. While, the PWAs are great at implementing all of the above things and are the obvious choice, there are certain things which can be broken when you use ServiceWorker(which are the building blocks of any PWA) to make your webaite a PWA.

We all know how good is Chrome Dev Tools when it comes to the web debugging capabilities. There are number of features in the Dev Tools which are very useful but we are unaware of.

While working on an Electron app Pomolectron, I needed to handle different time intervals through setInterval() function of JavaScript. I basically needed to implement three timers in my app:

Today, We are going to build a progressive Notepad app which can very well be used in offline mode, be responsive on all available devices, and saves the content locally on the device itself. So, the core functionality of this Notepad here is to make it work offline. To fulfill this requirement, we’ll use ServiceWorkers which I’m going to cover next.

Have you ever wanted to develop desktop apps while being a true web developer without even caring about the native architecture or the language most of the applications build for different platforms likes of Windows, macOS or Linux? Or you just wanted to get started with building desktop apps? Isn’t it great if you are able to build desktop apps using the technologies you already knows i.e. HTML, JavaScript and CSS? I was in the same urge to dive into world of desktop apps. So, I have been stuck on to GitHub’s Electron lately.