Work with cookies in native Javascript

cookie.js

// Set cookie.
function setCookie(name, value, expires, path, domain, secure) {
  document.cookie = name + "=" + escape(value) +
    ((expires) ? "; expires=" + expires : "") +
    ((path) ? "; path=" + path : "") +
    ((domain) ? "; domain=" + domain : "") +
    ((secure) ? "; secure" : "");
}

// Just set cookie:
setCookie('name', 'value');
// Set cookie for 1 hour:
date = new Date();
date.setHours(date.getHours() + 1);
setCookie('name', 'value', date.toUTCString());

// Get cookie.
function getCookie(name) {
  var cookie = " " + document.cookie;
  var search = " " + name + "=";
  var setStr = null;
  var offset = 0;
  var end = 0;
  if (cookie.length > 0) {
    offset = cookie.indexOf(search);
    if (offset != -1) {
      offset += search.length;
      end = cookie.indexOf(";", offset)
      if (end == -1) {
        end = cookie.length;
      }
      setStr = unescape(cookie.substring(offset, end));
    }
  }
  return(setStr);
}

// Example:
getCookie('name');

// Delete cookie.
function delCookie(name) {
  document.cookie = name + "=" + "; expires=Thu, 01 Jan 1970 00:00:01 GMT";
}

// Example:
delCookie('name');