Firebug chained methods - Usage.js

//Do this only one time !
makeChainable(console, 'assert clear count debug dir dirxml error exception group groupCollapsed groupEnd info log profile profileEnd time timeEnd warn'.split(' '));

//Usage:
console
	.profile()
		.time('testTime')
			.group('GroupTest')
				.debug('test', 1, 2, 3)
				.warn('warniiing!')
				.log('loo', true)
				.dir([1, 2, 3, 4])
				.info('plop')
			.groupEnd('GroupTest')
		.timeEnd('testTime')
	.profileEnd();

Firebug chained methods.js

var makeChainable = function(obj, method) {
    var m = Object.prototype.toString.call(method) === "[object Array]" ? method: [method],
    i = m.length;

    while (i--) {
        obj[m[i]] = function(o) {
            return function() {
                o.apply(this, arguments);
                return this;
            }
        } (obj[m[i]]);
    };
}