cookiesEnabled-判断浏览器是否启用cookie

/**

• 判断浏览器是否启用cookie
• @return {boolean}
  */
  function cookiesEnabled() {
  var cookieEnabled = navigator.cookieEnabled;
  if (cookieEnabled === false) {
  return false;
  }

if (!document.cookie && (cookieEnabled === null || false)) {
document.cookie = “testcookie=1”;

if (!document.cookie) {
  return false;
} else {
  document.cookie = "testcookie=; expires=" + new Date(0).toUTCString();
}

}
return true;
}