Code test to manage cookie

cookie-manage.js

function setCookie(name,value,days) {
  var expires = "";
  if (days) {
      var date = new Date();
      date.setTime(date.getTime() + (days*24*60*60*1000));
      expires = "; expires=" + date.toUTCString();
  }
  document.cookie = name + "=" + (value || "")  + expires + "; path=/";
}

function getCookie(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;
}

function eraseCookie(name) {
  document.cookie = name +'=; Path=/; Expires=Thu, 01 Jan 1970 00:00:01 GMT;';
}

function listCookie() {
  var result = [];
  var ca = document.cookie.split(';');
  for(var i=0;i < ca.length;i++) {
    var c = ca[i].trim();
    var n = c.split('=')[0];
    var v = c.substring(n.length+1);
    result[n] = v;
  }
  return result;
}