javascript cookie讀取與設定作業執行個體

網頁特效 cookie讀取與設定作業執行個體

/*讀寫cookie*/

function readcookie(name)
{
  var cookievalue = "";
  var search = name + "=";
  if(document.cookie.length > 0)
  {
    offset = document.cookie.indexof(search);
    if (offset != -1)
    {
      offset += search.length;
      end = document.cookie.indexof(";", offset);
      if (end == -1) end = document.cookie.length;
      cookievalue = unescape(document.cookie.substring(offset, end))
    }
  }
  return cookievalue;
}

// example:

// writecookie("mycookie", "my name", 24);
// stores the string "my name" in the cookie "mycookie" which expires after 24 hours.
function writecookie(name, value, hours)
{
  var expire = "";
  if(hours != null)
  {
    expire = new date((new date()).gettime() + hours * 3600000);
    expire = "; expires=" + expire.togmtstring();
  }
  document.cookie = name + "=" + escape(value) + expire;
 
}