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 updated according to the latest web standards.

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JavaScript is the Programming Language for the Web. JavaScript can update and change both HTML and CSS. JavaScript can calculate, manipulate and validate data.

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.

JavaScript as a programming language can be an important part of technology-based projects because it teaches students about logic, automation, and how to use code in the real world.

JavaScript Variables In a programming language, variables are used to store data values. JavaScript uses the keywords var, let and const to declare variables. An equal sign is used to assign values to variables. In this example, x is defined as a variable. Then, x …

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JavaScript statements can be grouped together in code blocks, inside curly brackets {...}. The purpose of code blocks is to define statements to be executed together.

With W3Schools online code editor, you can edit HTML, CSS and JavaScript code, and view the result in your browser. The window to the left is editable - edit the code and click on the "Run" button to view the result in the right window.

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.