MDN: JavaScript referencethe JavaScript reference serves as a repository of facts about the JavaScript language. The entire language is described here in detail.
Online Tutorials
MDN: JavaScript Guidethe JavaScript Guide shows you how to use JavaScript and gives an overview of the language
JavaScript Garden a growing collection of documentation about the most quirky parts of the JavaScript programming language
Blogs/News
2ality – JavaScript and moreDr. Axel Rauschmayer blog about JavaScript, web development and mobile computing and more
NDC ConferencesNDC is one of the world's largest independent software conferences covering pretty much everything you need to know within software development.