Can I use this feature in a given web browser in a given version?

If you are developing for the web you certainly were confronted by the question if a given web feature (webrtc, URLSearchParams, …) is supported by browsers and which versions of them. To answer this question you can use the website https://caniuse.com.

Confused with all the buzzwords and the JavaScript landscape?

InfoQ.com has a nice summary about how the JavaScript ecosystem looks right now (2016).

If you have previous programming experience but are a newcomer to frontend JavaScript development, the array of jargon and tools can be confusing. Without getting bogged down in detailed discussion, let’s take a general survey of the current “JavaScript landscape”. This should orient you sufficiently to start your journey into frontend development.

The articles touches everything from:

• How does client-side JavaScript work, and why use it?
• What’s a framework? Do I need to use trendy.js?
• Should I be writing JavaScript, or something else? What kinds of JavaScript exist?
• How do I use other people’s code?
• Do I need Node.js?
• What are my build tools?
• How do I test my code?
• So how do I get started?

Overwhelmed with the JavaScript ecosystem?

If you ever wanted to start with JavaScript development and you are coming from another programming language experience (say Java for example), you might be a little overwhelmed by the JavaScript ecosystem. Maybe you are hearing about Grunt, Angular, Gulp, npm and a lot of other stuff and you don’t know what they are. Infoq.com has an birds-eye view of the JavaScript ecosystem allowing new developers to make somewhat more educated decisions about the the direction they want to go.

If you are a new JavaScript developer then you can ease your dive into the new programming language with the free codecademy JavaScript course.