Javascript 操作cookie 类

在火狐官网扒过来的，地址是：https://developer.mozilla.org/en/DOM/document.cookie

    docCookies = {  
      getItem: function (sKey) {  
        if (!sKey || !this.hasItem(sKey)) { return null; }  
        return unescape(document.cookie.replace(new RegExp("(?:^|.*;\\s*)" + escape(sKey).replace(/[\-\.\+\*]/g, "\\$&") + "\\s*\\=\\s*((?:[^;](?!;))*[^;]?).*"), "$1"));  
      },  
      /** 
      * docCookies.setItem(sKey, sValue, vEnd, sPath, sDomain, bSecure) 
      * 
      * @argument sKey (String): the name of the cookie; 
      * @argument sValue (String): the value of the cookie; 
      * @optional argument vEnd (Number, String, Date Object or null): the max-age in seconds (e.g., 31536e3 for a year) or the 
      *  expires date in GMTString format or in Date Object format; if not specified it will expire at the end of session;  
      * @optional argument sPath (String or null): e.g., "/", "/mydir"; if not specified, defaults to the current path of the current document location; 
      * @optional argument sDomain (String or null): e.g., "example.com", ".example.com" (includes all subdomains) or "subdomain.example.com"; if not 
      * specified, defaults to the host portion of the current document location; 
      * @optional argument bSecure (Boolean or null): cookie will be transmitted only over secure protocol as https; 
      * @return undefined; 
      **/  
      setItem: function (sKey, sValue, vEnd, sPath, sDomain, bSecure) {  
        if (!sKey || /^(?:expires|max\-age|path|domain|secure)$/.test(sKey)) { return; }  
        var sExpires = "";  
        if (vEnd) {  
          switch (typeof vEnd) {  
            case "number": sExpires = "; max-age=" + vEnd; break;  
            case "string": sExpires = "; expires=" + vEnd; break;  
            case "object": if (vEnd.hasOwnProperty("toGMTString")) { sExpires = "; expires=" + vEnd.toGMTString(); } break;  
          }  
        }  
        document.cookie = escape(sKey) + "=" + escape(sValue) + sExpires + (sDomain ? "; domain=" + sDomain : "") + (sPath ? "; path=" + sPath : "") + (bSecure ? "; secure" : "");  
      },  
      removeItem: function (sKey) {  
        if (!sKey || !this.hasItem(sKey)) { return; }  
        var oExpDate = new Date();  
        oExpDate.setDate(oExpDate.getDate() - 1);  
        document.cookie = escape(sKey) + "=; expires=" + oExpDate.toGMTString() + "; path=/";  
      },  
      hasItem: function (sKey) { return (new RegExp("(?:^|;\\s*)" + escape(sKey).replace(/[\-\.\+\*]/g, "\\$&") + "\\s*\\=")).test(document.cookie); }  
    };  
      
    // docCookies.setItem("test1", "Hello world!");  
    // docCookies.setItem("test2", "Hello world!", new Date(2020, 5, 12));  
    // docCookies.setItem("test3", "Hello world!", new Date(2027, 2, 3), "/blog");  
    // docCookies.setItem("test4", "Hello world!", "Sun, 06 Nov 2022 21:43:15 GMT");  
    // docCookies.setItem("test5", "Hello world!", "Tue, 06 Dec 2022 13:11:07 GMT", "/home");  
    // docCookies.setItem("test6", "Hello world!", 150);  
    // docCookies.setItem("test7", "Hello world!", 245, "/content");  
    // docCookies.setItem("test8", "Hello world!", null, null, "example.com");  
    // docCookies.setItem("test9", "Hello world!", null, null, null, true);  
      
    // alert(docCookies.getItem("test1"));