How to trace or debug all available javascript events

Question

How can I trace all Javascript events of a web page?

Is there a possibility to trace all events, even such without a handler attached?

Is there any tool out th

Answer 1

Here's a simple script to log all available events in the browser's console:

var ev = '',
    out = [];
for (ev in window) {
    if (/^on/.test(ev)) { 
        out[out.length] = ev;
    }
}
console.log(out.join(', '));

Of course you'll get only the events of the browser you're currently using.