W3Schools maintains a complete JavaScript reference, including all HTML and browser objects. The reference contains examples for all properties, methods and events, and is continuously …

Arrays are a special type of objects. The typeof operator in JavaScript returns "object" for arrays. But, JavaScript arrays are best described as arrays. Arrays use numbers to access its …

Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, Python, PHP, Bootstrap, Java, XML and more.

A JavaScript Promise object can be: Pending; Fulfilled; Rejected; The Promise object supports two properties: state and result. While a Promise object is "pending" (working), the result is …

What is JavaScript? JavaScript is the programming language of the web. It can update and change both HTML and CSS. It can calculate, manipulate and validate data.

Common uses for JavaScript are image manipulation, form validation, and dynamic changes of content. To select an HTML element, JavaScript most often uses the …

With the HTML DOM, JavaScript can access and change all the elements of an HTML document.

A JavaScript function is defined with the function keyword, followed by a name, followed by parentheses (). Function names can contain letters, digits, underscores, and dollar signs …

JavaScript modules allow you to break up your code into separate files. This makes it easier to maintain a code-base. Modules are imported from external files with the import statement. …

splice() is an ECMAScript1 (JavaScript 1997) feature. It is supported in all browsers: