set, read, remove cookies
var cookieValue;
function logCookieValue() {
console.log(cookieValue);
}
document.cookie = "toggleMenuClass=sidenav-toggled";
var cookieValue = document.cookie.replace(/(?:(?:^|.*;\s*)toggleMenuClass\s*\=\s*([^;]*).*$)|^.*$/, "$1");
logCookieValue();
// read
function readCookie(name) {
var nameEQ = name + "=";
var ca = document.cookie.split(';');
for(var i=0;i < ca.length;i++) {
var c = ca[i];
while (c.charAt(0)==' ') c = c.substring(1,c.length);
if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
}
return null;
}
var value = readCookie('toggleMenuClass');
console.log(value + ' - toggleMenuClass');
if(value == 'sidenav-toggled') {
$('body').addClass('sidenav-toggled');
} else {
$('body').removeClass('sidenav-toggled');
}