js cookie

//процедурное
function writeCookie(name, value, days) {
  var expires = "";
  if (days) {
    var date = new Date();
    date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
    expires = "; expires=" + date.toGMTString();
  }
  document.cookie = name + "=" + value + expires + "; path=/";
}
function readCookie(name) {
  var searchName = name + "=";
  var cookies = document.cookie.split(';');
  for(var i=0; i < cookies.length; i++) {
    var c = cookies[i];
    while (c.charAt(0) == ' ')
      c = c.substring(1, c.length);
    if (c.indexOf(searchName) == 0)
      return c.substring(searchName.length, c.length);
  }
  return null;
}
function eraseCookie(name) {
  writeCookie(name, "", -1);
}

//ООП
var jsCookie = {
    writeCookie: function (name, value, days) {
      var expires = "";

      if (days) {
        var date = new Date();
        date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
        expires = "; expires=" + date.toGMTString();
      }

      document.cookie = name + "=" + value + expires + "; path=/";
    },

    readCookie: function (name) {
      var searchName = name + "=";
      var cookies = document.cookie.split(';');
      for(var i=0; i < cookies.length; i++) {
        var c = cookies[i];
        while (c.charAt(0) == ' ')
          c = c.substring(1, c.length);
        if (c.indexOf(searchName) == 0)
          return c.substring(searchName.length, c.length);
      }
      return null;
    },

    eraseCookie: function (name){
      writeCookie(name, "", -1);
    }
}