Programming

This article will show you how to create and consume Enums in JavaScript. Unfortunately, javaScript does not include native support for Enums, but you can add comparable functionality yourself. Note that TypeScript, a language that builds on JavaScript, does include support for Enums natively. So we’re only looking at plain JavaScript here – not TypeScript. What is an Enum? An Enum (Enumerated Type) is a data structure containing multiple values. Each value is assigned to an identifier – and can be accessed by that identifier. Enums contain pre-defined constants … Read more

This guide will show you how to quickly and easily generate random numbers and strings in the JavaScript programming language. Generating random values is a common and important task when programming almost any kind of application of moderate complexity. Random strings and numbers are used to generate unique identifiers (e.g., for the short URLs in URL shortening services), for identifying unique records in a database, and (most importantly) are frequently used to determine the behavior of gameplay elements in video games (for example, simulating a … Read more

Want to split a string up into several smaller strings using JavaScript? This is the article for you. The JavaScript string.split() method will split up a string and return an array of strings. The string will be split at the position noted by a specified character. Here’s how to use it. JavaScript string.split() Syntax A method is a function or procedure available to run from an object or variable which will be run using the value from that variable. The split() method is available on any string typed variable. Here’s the … Read more

This short article will explain what the ternary operator is in JavaScript and how to use it. The ternary operator is a short-hand if statement for quickly executing code based on whether a condition is met. It simplifies your code and reduces visual clutter. Here’s how to use it. JavaScript Ternary Operator Syntax The syntax for using the ternary operator is as follows: CONDITION ? TRUE_EXPRESSION : FALSE_EXPRESSION Note that: CONDITION should be a value or expression which can be evaluated as truthy or not truthy TRUE_EXPRESSION is the expression that will be … Read more

This short article will explain what ‘undefined’ means in JavaScript – as both a type and a variable value. Creating a Variable with an undefined value To create a variable with an undefined value, it simply needs to be declared with no assigned value, for example: var myVariable; console.log(myVariable); If the above code is executed, undefined is logged as the value of myVariable as no value was assigned. undefined is a Type of Variable undefined is one of the primitive variable types in JavaScript. A variable type describes what a variable can be used for (for … Read more