console crossbrowser

gistfile1.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
 */
(function () {
    if (!window.console) {
        window.console = {};
    }
    // union of Chrome, FF, IE, and Safari console methods
    var functionCall = function () {},
        i,
        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 (i = 0; i < m.length; i += 1) {
        if (!window.console[m[i]]) {
            window.console[m[i]] = functionCall;
        }
    }
}());