friendica-addons/cookienotice/cookienotice.js

window.addEventListener("load", function () {
	var cookiename = 'cncookiesaccepted'
	var cookie = getCookie(cookiename);

	if (cookie == "") {
		document.getElementById('cookienotice-box').style.display = 'block';
		document.getElementById('cookienotice-ok-button').onclick = function () {
			console.log('clicked');
			setCookie(cookiename, 1, 365);
			document.getElementById('cookienotice-box').style.display = 'none';
		};
	}

	function setCookie(cname, cvalue, exdays) {
		var d = new Date();
		d.setTime(d.getTime() + (exdays * 24 * 60 * 60 * 1000));
		var expires = "expires=" + d.toUTCString();
		document.cookie = cname + "=" + cvalue + ";" + expires + ";path=/";
	}

	function getCookie(cname) {
		var name = cname + "=";
		var decodedCookie = decodeURIComponent(document.cookie);
		var ca = decodedCookie.split(';');
		for (var i = 0; i < ca.length; i++) {
			var c = ca[i];
			while (c.charAt(0) == ' ') {
				c = c.substring(1);
			}
			if (c.indexOf(name) == 0) {
				return c.substring(name.length, c.length);
			}
		}
		return "";
	}

});