I am looking for a reference card for JavaScript - for example a summary of syntax and methods parameters. Google gives me lots of choices. What is a good one?
Actually, the one I use is the first hit on a Google search - Added Bytes Cheat Sheet .
For basic stuff I recommend W3Schools. It's not great but it's an ok beginning. For advanced stuff I recommend the Mozilla documentation. For on the fly prototyping I recommend a JavaScript Shell which can allow you to test what methods are available by doing something like props(object)
which shows what properties (fields, methods) an object has.
Danny Goodman's JavaScript and Browser Objects Quick Reference is quite useful.
Personally, I like the O'Reilly pocket reference books for stuff like this, they are inexpensive and come in handy here and there.
But, if you are looking for something online, I usually find a lot of good basic javascript (and HTML/CSS/etc..) stuff on w3schools.
You may find a lot of JavaScript cheat sheets at TechPosters website.