Mini embeddable JavaScript stacktrace function (for the most relevant browsers)

browser-js-stacktrace.js

// Create an error (normally you don't do that, but a try-catch :))
var e = new Error();

// Add a lineNumber and fileName property to the error in case there is none.
if (e.stack){ // Chrome has the "stack" property, but it's a rough string, parse out the lineNo and fileName.
    var match = e.stack.split("\n")[1].match(/.*(http(s)?:\/\/.*):(\d+):(\d+)/);
    if (match.length==5){ e.lineNumber = match[3]; e.fileName = match[1]; }
} else if (e.line && e.sourceURL){ // Safari has those
    e.lineNumber = e.line; e.fileName = e.sourceURL;
}