JQuery Cookie operation plug-in

Cookie plug-in of jQuery

01	// jQuery.cookie.js

02	jQuery.cookie = function(name, value, options) {

03	if (typeof value != 'undefined') {

04	options = options || {};

05	if (value === null) {

06	value = '';

07	options = $.extend({}, options);

08	options.expires = -1;

09

}

10	var expires = '';

11	if (options.expires && (typeof options.expires == 'number'|| options.expires.toUTCString)) {

12

var date;

13	if (typeof options.expires == 'number') {

14	date = new Date();

15	date.setTime(date.getTime() + (options.expires * 24 * 60 * 60 * 1000));

16

} else {

17	date = options.expires;

18

}

19	expires = '; expires=' + date.toUTCString();

20

}

21	var path = options.path ? '; path=' + (options.path) : '';

22	var domain = options.domain ? '; domain=' + (options.domain) : '';

23	var secure = options.secure ? '; secure' : '';

24	document.cookie = [name, '=', encodeURIComponent(value), expires, path, domain, secure].join('');

25

} else {

26	var cookieValue = null;

27	if (document.cookie && document.cookie != '') {

28	var cookies = document.cookie.split(';');

29	for (var i = 0; i < cookies.length; i++) {

30	var cookie = jQuery.trim(cookies[i]);

31	if (cookie.substring(0, name.length + 1) == (name + '=')) {

32	cookieValue = decodeURIComponent(cookie.substring(name.length + 1));

33

break;

34

}

35

}

36

}

37	return cookieValue;

38

}

39

};

 

 

The usage is as follows:
1. Set the cookie value. For example, to set the cookie with the variable userid 123, the Code is as follows:
$. Cookie ('userid', '20140901 ');
2. Create a cookie and set the Domain Name of the cookie's validity period. The Code is as follows:
$. Cookie ('userid, '000000', {expires: 7, path: '/', domain: 'jquery. com', secure: true });
Note: If the {} parameter is removed, it will take effect with the default setting after the new parameter is created.
3. delete a cookie. Set the cookie value to null. The Code is as follows:
$. Cookie ('userid', null );
4. Read the cookie. For example, to read the cookie value of the variable named userid, the Code is as follows:
Var uId = $. cookie ('userid ');