phpjs/experimental/misc/connection_status.js

php.js offers community built php functions in javascript

function connection_status() {
  // http://kevin.vanzonneveld.net
  // +   original by: Brett Zamir (http://brett-zamir.me)
  // *     example 1: connection_status();
  // *     returns 1: 3

  var ret = 0; // NORMAL
  if (this.php_js && this.php_js.abortStatus) {
    ret += 1; // ABORTED
  }
  if (this.php_js && this.php_js.timeoutStatus) {
    ret += 2; // TIMEOUT
  }
  return ret;
}