A JavaScript Tutorial

MDN Web Docs (Mozilla Developer Network) provides a thorough “re-introduction” to JavaScript, saying that the language is notorious for being misunderstood. “It is often derided as being a toy,” they write, “but beneath its layer of deceptive simplicity, powerful language features await.” 

The overview notes that "JavaScript is now used by an incredible number of high-profile applications, showing that deeper knowledge of this technology is an important skill for any web or mobile developer.” This tutorial explores the various building blocks of the language to help you get started.

Learn more at MDN Web Docs.

See also:
8 Ways to Learn JavaScript Online
Your First Programming Language