Learn how to make the most of Observable JavaScript and the Observable Plot library, including a step-by-step guide to eight basic data visualization tasks in Plot.

In JavaScript, you can define a variable as myVariable = "something"; or var myVariable = "something";, the difference being the word var preceding the statement.

Nowadays JavaScript has three different keywords to declare a variable — var, let and, const. Each has its own properties and particularities. Let’s start by making a simple comparison table ...

Unlike strongly typed programming languages such as C#, JavaScript is loosely typed and allows you to assign any data type to a variable without giving the variable a specific type. In JavaScript ...

Variable vs. Attribute Data: Real-World Scenarios. A popular amusement park has roller coasters and rides for children of all ...

Before you say it, yes I know about cookies. The problem I have is I need to keep a LOT of numbers between refreshes, and was wondering if there is some way to mark an array variable as unrefreshable.

Because TypeScript is a superset of JavaScript, the JavaScript code that I showed earlier is valid TypeScript code. However, if you're going to switch to TypeScript, you should take advantage of ...