black background console log for code

log.js

function stretch(args) {
	for (var i = 0, il = args.length; i<il; i++) {
		var c = args[i];
		args[i] += new Array(200).slice(c.length).join(' ');
	}

	return args;
}
 
function log() {
	var css = 'background: black; color: red; font-weight: bold;';
	var args = Array.prototype.slice.call(arguments);

	for (var i = 0, il = args.length; i<il; i++) {
		var c = args[i];
		if (typeof(c) === 'string') {
			console.log('%c' + stretch(c.split('\n')).join('\n'), css);
		} else {
			console.log(c)
		}
	}
}

More interesting stuff for your console logs here -

https://coderwall.com/p/fskzdw/colorful-console-log

https://gist.github.com/vprimachenko/6523913

http://pastebin.com/Lx5gjXsA

https://gist.github.com/LeaVerou/9518902

https://developer.chrome.com/devtools/docs/console-api#consolelogobject_object

http://stackoverflow.com/questions/7505623/colors-in-javascript-console

http://www.snip2code.com/Snippet/37333/Awesomify-er-your-console-log---extended