Question

I want to know what is ‘e’ (s. following source code) and what member it has. Where do I find a documentation for this kind of stuff? I would like to have “one” documentation for the whole jQuery-API and all parameters. Searching in Google is too time-consuming…

$("#idxy").mousedown(function(e) { ... });

Do you have any recommendations?

Answer 1

Check out the official jQuery documentation.

In this case, e refers to the Event object, which is passed to all event handlers by jQuery. This differs to a standard Event object in that jQuery normalizes many properties for cross-browser consistency.

One extremely handy tip is that you can type http://api.jquery.com/methodName and you’ll get shown the documentation for that method; try it out;

• http://api.jquery.com/mousedown for the mousedown() function
• http://api.jquery.com/attr for the attr() function
• http://api.jquery.com/length for the length member

… you get the idea ;).