Detecting if a JavaScript string value is in camelCase is likely an edge case. Yet, it can be a valid check in your codebase. This tutorial shows you how to determine whether a given string is in camelCase format. {{outline}} Detect if a String Value is in camelCase You should …

There are situations when you want to reverse a given string value. This tutorial shows you how to reverse a string from a given value. {{outline}} Reverse a String in JavaScript JavaScript doesn’t have a native Str#reverse method. Yet, you can use the existing methods to build your …

JavaScript provides a handful of foundational string methods in the stdlib. You can use the given methods to compose your own utility functions. For example, you can split a multiline string into an array of lines. Each line in that array is a string as well. From here, you can …

You may want to split a JavaScript string into a list of words. JavaScript doesn’t provide a native words method. Yet, it comes with the necessary functionality to build this method yourself. This tutorial shows you how to split a given JavaScript string into an array of words. {{outline} …

Base64 is a binary-to-text encoding scheme used to transport data. The encoding is necessary when the transfer medium is not able to handle binary data. This binary data is then translated to a text representation (base64) and transferred as text. This tutorial shows you how to base64-encode and -decode a …

Deleting keys from an object may happen in a handful of situations. Like, in case a request contains a key-value pair that isn’t allowed to be part of the request and you still want to handle that request. You can then delete the keys not being allowed and proceed …

Node.js introduced async/await as a language feature in version 8.0.0. With async/await the development flow changed to use promises instead of callbacks. Since then, the Node.js team added promise-based APIs to Node’s core. I’m continuously updating this overview of promise-based APIs in …

Certbot is part of the Let’s Encrypt family. You’re issuing your Let’s Encrypt SSL certificates through certbot. Certbot is software that you should keep track of during system maintenance. This tutorial shows you how to display the Certbot version number. {{outline}} Show Certbot Version on Ubuntu/Debian …