Sorting arrays in a common use case in application development. Sorting arrays by a boolean value is not as typical as sorting by numbers or strings. At least for us at Future Studio. This tutorial shows you how to sort a JavaScript boolean array. Also: this approach works in TypeScript, …

JavaScript comes with handy string methods. RegEx support in JavaScript string methods is helpful in a lot of use-cases. For example, if you want to remove all numbers from a string: JavaScript has your back! {{outline}} Strip Numbers From a String JavaScript comes with built-in methods to remove all numbers …

Sometimes you need to retrieve the name of a class in JavaScript. This is helpful for debug messages or when using the class name as an identifier. Retrieving the class name in JavaScript is different for static and instance methods. This tutorial walks you through the individual method types and …

JavaScript comes with a globally available String class. It provides dozens of useful methods for string transformations. For example, you may lowercase or uppercase a given string, replace parts of the string value, or check whether a string value includes a given term. This tutorial shows you how to remove …

Serializing JavaScript objects and other data structures as JSON is useful for data exchange between a server and a client. The JSON data exchange between client and server doesn’t require a JavaScript stack on both ends. JSON support is typically available in most programming languages. {{outline}} Creating a Custom …

While building the queuing feature in the Supercharge framework, we wanted to enqueue jobs with a delay. You can delay a job by a given number of seconds. Internally, Supercharge stores a notBefore date with the added delay seconds. This tutorial shows you how to add seconds to a date …

Sorting data is a common task in programming. JavaScript provides a .sort(comparator) method on arrays allowing you to sort data with custom comparator. A comparator represents a compare function determining which element comes before the other. When sorting integers, a custom compare function comes handy because you can ensure …

You may want to add different behavior for different input types when working with functions in Node.js and JavaScript. For example, if an input is a promise, you want to resolve it first before moving on with the actual processing. This tutorial shows you how to detect whether a …