jquery cookie usage (Get cookie value, delete cookie)

Source: Internet
Author: User
Tags set cookie

Incorrect value occurred while using jquery to manipulate cookies:

The result is that cookies have four different properties:
Name, content, domain, path

The code is as follows Copy Code


$.cookie (' The_cookie '); Read cookies
$.cookie (' The_cookie ', ' the_value '); Store cookies
$.cookie (' The_cookie ', ' The_value ', {expires:7}); Store a cookie with a period of 7 days
$.cookie (' The_cookie ', ', {Expires:-1}); Delete Cookies

Use:

The code is as follows Copy Code
$.cookie ("Currentmenuid", MenuID);

The domain and path were not specified.
All different cookies are generated when the domain and path are different

The code is as follows Copy Code
$.cookie ("Currentmenuid");

A problem occurs when a value is taken.

So

The code is as follows Copy Code
$.cookie ("Currentmenuid", "MenuID", {path: "/"});

to overwrite. A cookieid corresponds to a value in the same field.

Now let's take a look at an example

The path setting for cookies requires that if you do not set path: '/', path will be automatically set up according to the directory [such as: Http://www.xxx.com/user/,path will be set to '/user ']

The code is as follows Copy Code

$.extend ({

/**
1. Set the value of the cookie, and set the value of the name variable to
Example $.cookie (' name ', ' value ');
2. Create a new cookie including the expiration path domain name, etc.
Example $.cookie (' name ', ' value ', {expires:7, path: '/', Domain: ' jquery.com ', secure:true});
3. Create a new cookie
Example $.cookie (' name ', ' value ');
4. Delete a cookie
Example $.cookie (' name ', null);
5. Take a cookie (name) value to MyVar
var account= $.cookie (' name ');
**/
Cookiehelper:function (name, value, options) {
if (typeof value!= ' undefined ') {//name and value given, set cookie
options = Options | | {};
if (value = = null) {
Value = ';
Options.expires =-1;
}
var expires = ';
if (Options.expires && (typeof options.expires = ' number ' | | | options.expires.toUTCString)) {
var date;
if (typeof options.expires = = ' number ') {
Date = new Date ();
Date.settime (Date.gettime () + (Options.expires * 24 * 60 * 60 * 1000));
} else {
date = Options.expires;
}
expires = '; Expires= ' + date.toutcstring (); Use expires attribute, Max-age isn't supported by IE
}
var path = Options.path? '; Path= ' + options.path: ';
var domain = Options.domain? '; Domain= ' + options.domain: ';
var secure = options.secure? '; Secure ': ';
Document.cookie = [name, ' = ', encodeURIComponent (value), expires, path, domain, Secure].join (');
else {//only name given, get cookie
var cookievalue = null;
if (document.cookie && document.cookie!= ") {
var cookies = Document.cookie.split (';');
for (var i = 0; i < cookies.length; i++) {
var cookie = Jquery.trim (Cookies[i]);
Does this cookie string begin with the name we want?
if (cookie.substring (0, name.length + 1) = = (name + ' = ')) {
Cookievalue = decodeURIComponent (cookie.substring (name.length + 1));
Break
}
}
}
return cookievalue;
}
}

});

jquery action Cookie Records user query information

Http://www.111cn.net/wy/js-ajax/40554.htm

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.