Function to create a cookie via the browser dev console. Just update, copy, and paste.

Create Cookie - Dev Console

//Creates cookie with name, value, and number of days till expiration
//Original Source: http://www.quirksmode.org/js/cookies.html

function createCookie(name,value,days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}


//Then to call the cookie function...

createCookie('ppkcookie','testcookie',7)