Home > Developer > JavaScript

Cookie object in JavaScript

Source: Internet
Author: User
Developer on Alibaba Coud: Build your first app with APIs, SDKs, and tutorials on the Alibaba Cloud. Read more ＞

    • Cookie Object
    • is a data message (cookie data) that is stored in the cookie folder of the client's hard disk in the form of a file (cookies file). User data information (cookie data) in the cookie folder. The cookie file is established by the Web site visited to hold the session data between the client and the Web site for a long time, and the cookie data is only allowed to be read by the Web site visited. (Cross-domain access is not allowed)
    • The format of the cookie file:
    • NS:Cookie.txt
    • IE: User name @ domain. txt

    • JavaScript writes cookies
    • Format:
    • document.cookie= "keyword = value [; expires= Effective Date] [; ...]"
    • Note:
      • Effective date format: Wdy,dd-mon-yy HH:MM:SS
      • Wdy/mon: English Week/month;
      • Also includes path, domain, and secure attributes;
      • Each Web site (domain) can create 20 cookie data;
      • Each browser can store 300 cookie data, 4K bytes;
      • The client has no write-down cookie data.

    • It is much more troublesome to use JS to manipulate cookies than to use JSP servlet to manipulate cookies.

why can't I see the cookie file in the cookie folder that I used to hold the session ?

    • Use two types of cookies
      • Persistent cookies are stored on the client's hard disk.
      • Session Cookie: It is not stored on the client's hard disk, but is placed in the memory of the browser process, and the session cookie is destroyed when the browser is closed.

<!DOCTYPE HTML> <HTML> <Head> </Head> <Body> <Scripttype= "Text/javascript">     varToday=NewDate (); varExpireday=NewDate (); varMspermonth= -* -* -* +* to; Expireday.settime (Today.gettime ()+mspermonth); Document.cookie="name=liujl;expires="+expireday.togmtstring (); Document.writeln ("The cookie has been written to the hard drive."); Document.writeln ("The content is:"+document.cookie); Document.writeln ("Expiry time:"+expireday.togmtstring ()); </Script> </Body> </HTML>

Cookie object in JavaScript

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

Related Keywords:
declare object in javascript set cookie in javascript example delete cookie in javascript example get cookie value in javascript javascript replace object in array count object length in javascript ways to create object in javascript
Related Article
The difference between single and double quotes in JavaScript...
Http status code: 301, 302 redirection, 302 redirection
Ajax and 302 response code test_javascript-js tutorial

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.

What's Trending
Top 10 Tags
datastax versions naming convention zookeeper client class definition md5 microsoft sql server 2005 data structures exception handling error handling
Top 10 Keywords
microsoft download center down wordpress address url site address url wordpress address url windows installer 4 0 download 302 not found web address url definition site address url wordpress db2 integer mac os installation step by step pdf abbreviation for return

A Free Trial That Lets You Build Big!

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

Get Started for Free

  • Sales Support

    1 on 1 presale consultation

    Chat Contact Sales

  • After-Sales Support

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

    Open a Ticket

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

    Learn More