When building tools that work with dates, you may want to provide a button that acts as a shortcut to increase a date by one week. Internally, your application still works with actual dates and you may want to calculate the date in one week. This tutorial shows you how …

Imagine a planning tool like a ToDo-list where you want to schedule a task due for tomorrow. Clicking a button “plan for tomorrow“ sets the due date to tomorrow. Your database still needs an actual date as the deadline. This tutorial shows you how to retrieve tomorrow’s date in …

Generating random strings in Node.js or JavaScript is useful in various situations. For example, when generating an application or encryption key you want to create random strings with a minimal chance of duplication or collision. This tutorial shows you two ways to create a random string with JavaScript. {{outline} …

GitHub Actions is a new product in the GitHub family. GitHub Actions offers a configuration-centric approach to run tasks, like a CI/CD pipeline, on defined events like tagging a new release. GitHub Actions open a whole new world for developers to automate tasks. The product is built on Docker …

String replacements in JavaScript are a common task. It still can be tricky to replace all appearances using the string.replace() function. Removing all whitespace can be cumbersome when it comes to tabs and line breaks. Luckily, JavaScript’s string.replace() method supports regular expressions. This tutorial shows you how …

When working with arrays of data, you may need to run an asynchronous operation on each item. The Promise.all() method provides a convenient interface to run a list of promises in parallel, but it has some limitations. Using Promise.all() may overload the available resources, especially when reaching out …

The recent tutorials in this series on JSON web tokens introduced a handful of code changes. For example, you switched the packages creating JWTs from jsonwebtoken to node-jose to support encrypted and nested tokens. A downside of this switch: the JWT-related claims were added jsonwebtoken automatically when creating a new …

Sometimes you need to remove duplicate values from an array in JavaScript. Actually, it’s straightforward in modern JavaScript to quickly create an array of unique values using the Set data structure. {{outline}} JavaScript Array With Unique Values This is a welcoming use-case for the Set data structure. JavaScript introduced …