Track JavaScript errors using Universal Analytics from Google.

JS-error-tracking-with-GA.js

/**
 * Track JS error details in Universal Analytics
 */
 
function trackJavaScriptError(e) {
  var errMsg = e.message;
  var errSrc = e.filename + ': ' + e.lineno;
  ga('send', 'event', 'JavaScript Error', errMsg, errSrc, { 'nonInteraction': 1 });
}
 
window.addEventListener('error', trackJavaScriptError, false);