ie-console.js

console.js

/**
 * Protect window.console method calls, e.g. console is not defined on IE
 * unless dev tools are open, and IE doesn't define console.debug
 * http://stackoverflow.com/a/13817235/1024811
 */
(function() {
  if (!window.console) {
    window.console = {};
  }
  // union of Chrome, FF, IE, and Safari console methods
  var m = [
    "log", "info", "warn", "error", "debug", "trace", "dir", "group",
    "groupCollapsed", "groupEnd", "time", "timeEnd", "profile", "profileEnd",
    "dirxml", "assert", "count", "markTimeline", "timeStamp", "clear"
  ];
  // define undefined methods as noops to prevent errors
  for (var i = 0; i < m.length; i++) {
    if (!window.console[m[i]]) {
      window.console[m[i]] = function() {};
    }
  }
})();

This one looks good too:

http://stackoverflow.com/a/12580824/1024811