1. function setCookie(name, value, expires, path, domain, secure) {
    2.     var cookieText = encodeURIComponent(name) + '=' + encodeURIComponent(value);
    3.     if (expires instanceof Date) {
    4.         cookieText += '; expires=' + expires;
    5.     }
    6.     if (path) {
    7.         cookieText += "; path=" + path     }
    8.     if (domain) {
    9.         cookieText += '; domain=' + domain;
    10.     }
    11.     if (secure) {
    12.         cookieText += '; secure';
    13.     }
    14.     document.cookie = cookieText;
    15. }
    16. // 获取cookie
    17. function getCookie(name) {
    18.     var cookieName = encodeURIComponent(name) + '=';
    19.     var cookieStart = document.cookie.indexOf(cookieName);
    20.     var cookieValue = null;
    21.     if (cookieStart > -1) {
    22.         var cookieEnd = document.cookie.indexOf(';', cookieStart);
    23.         if (cookieEnd == -1) {
    24.             cookieEnd = document.cookie.length;
    25.         }
    26.         cookieValue = decodeURIComponent(document.cookie.substring(cookieStart + cookieName.length, cookieEnd));
    27.     }
    28.     return cookieValue;
    29. }
    30. // 删除cookie
    31. function unsetCookie(name) {
    32.     document.cookie = name + "= ; expires=" + new Date(0);
    33. }