Implementation code Summary of JavaScript cookie operation class _javascript tips for using a method

The first method: Cookie operation class, code encapsulation, the following also have the use of methods, we can refer to the following.

Copy Code code as follows:

String.prototype.Trim = function ()
{
Return This.replace (/^\s+/g, ""). Replace (/\s+$/g, "");
}
function Jscookie ()
{
This. GetCookie = function (key)
{
var cookie = Document.cookie;
var cookiearray = Cookie.split (';');
var getvalue = "";
for (var i = 0;i<cookiearray.length;i++)
{
if (cookiearray[i). Trim (). substr (0,key.length) = = key)
{
GetValue = Cookiearray[i]. Trim (). substr (key.length + 1);
Break
}
}
return GetValue;
};
This. Getchild = function (Cookiekey,childkey)
{
var child = this. GetCookie (Cookiekey);
var childs = child.split (' & ');
var getvalue = "";
for (var i = 0;i < childs.length;i++)
{
if (childs[i). Trim (). substr (0,childkey.length) = = Childkey)
{
GetValue = Childs[i]. Trim (). substr (childkey.length + 1);
Break
}
}
return GetValue;
};
This. Setcookie = function (Key,value,expire,domain,path)
{
var cookie = "";
if (key!= null && value!= null)
Cookie + = key + "=" + Value + ";";
if (expire!= null)
Cookies = + "expires=" + expire.togmtstring () + ";";
if (domain!= null)
Cookies = + "domain=" + domain + ";";
if (path!= null)
Cookies = + "path=" + path + ";";
Document.cookie = cookie;
};
This. Expire = function (key)
{
Expire_time = new Date ();
Expire_time.setfullyear (Expire_time.getfullyear ()-1);
var cookie = "" + key + "=e;expires=" + Expire_time + ";"
Document.cookie = cookie;
}
}

usage:
One, set cookies
var cookie = new Jscookie ();
Normal settings
Cookies. Setcookie ("Key1", "val1");
Expiration time is one year
var expire_time = new Date ();
Expire_time.setfullyear (Expire_time.getfullyear () + 1);
Cookies. Setcookie ("Key2", "Val2", expire_time);
Set the domain and path with expiration time
Cookies. Setcookie ("Key3", "Val3", Expire_time, ". cnblogs.com", "/");
Set the cookie for the Ribbon key, which is K1,K2,K3, respectively.
Cookies. Setcookie ("Key4", "k1=1&k2=2&k3=3");
second, read cookies
Easy to get
Cookies. GetCookie ("Key1");
Cookies. GetCookie ("Key2");
Cookies. GetCookie ("Key3");
Cookies. GetCookie ("Key4");
Gets the subkey K1 value of the Key4
Cookies. Getchild ("Key4", "K1");
Third, delete
Cookies. Expire ("Key1");
Cookies. Expire ("Key2");
Cookies. Expire ("Key3");
Cookies. Expire ("Key4");
The second method: The cookie operator function, which is also used by the cloud-dwelling community. You can choose according to your needs.

Copy Code code as follows:

function Setcookie (name, value)//cookies set JS
{
var argv = setcookie.arguments;
var argc = setCookie.arguments.length;
var expires = (argc > 2)? ARGV[2]: null;
if (expires!=null)
{
var largeexpdate = new Date ();
Largeexpdate.settime (Largeexpdate.gettime () + (expires*1000*3600*24));
}
Document.cookie = name + "=" + Escape (value) + ((expires = null)? "" : ("; Expires= "+largeexpdate.togmtstring ()));
}

function GetCookie (Name)//cookies Read JS
{
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
return unescape (offset, end) (document.cookie.substring)
}
else return ""
}
}

How to use:

Copy Code code as follows:

if (GetCookie ("Yxjok")!= "OK") {
Determine if the Yxjok value in the cookie is not OK, not the advertisement below.
document.write (' <div id= "JB51_YXJ" ><a href= "http://www.jb51.net" onclick= "Closeyxj ()" target= "_blank" > /></a></div> ');
}
function Closeyxj () {
Turn off the reality of advertising. And the cookies record has been shown, here the function is mainly closed after a period of time does not show the default is 24 hours.
$ ("Jb51_yxj"). style.display= ' None ';
Setcookie ("Yxjok", "OK", 10);
}

function Setadcookie (name, value)//mainly modifies the expiration time of cookies for a few minutes.
{
var argv = setadcookie.arguments;
var argc = setADCookie.arguments.length;
var expires = (argc > 2)? ARGV[2]: null;
if (expires!=null)
{
var largeexpdate = new Date ();
Largeexpdate.settime (Largeexpdate.gettime () + (expires*1000*300));
}
Document.cookie = name + "=" + Escape (value) + ((expires = null)? "" : ("; Expires= "+largeexpdate.togmtstring ()));
}