How can js give the stored cookie value a period of validity and let it expire automatically the next day?
This article mainly explains "js how to give the stored cookie value a period of validity and let the next day automatically expire", interested friends may wish to have a look. The method introduced in this paper is simple, fast and practical. Let's let the editor take you to learn how js can give the stored cookie value a period of validity and let it expire automatically the next day.
How can js give the stored cookie value a validity period, let it expire automatically the next day, and count it again? the code is as follows:
Cookie = {
/ * *
* obtain cookie
, /
Get: function (name) {
Var cookieName = encodeURIComponent (name) +'='
CookieStart = [xss_clean] .indexOf (cookieName)
CookieValue = null
If (~ cookieStart) {
Var cookieEnd = [xss_clean] .indexOf (';', cookieStart)
If (! ~ cookieEnd) {
CookieEnd = [xss_clean] .length
}
CookieValue = decodeURIComponent ([xss_clean] .substring (cookieStart + cookieName.length, cookieEnd))
}
Return cookieValue
}
/ * *
* set cookie
, /
Set: function (name, value, expires, path, domain, secure) {
Var cookie = encodeURIComponent (name) +'='+ encodeURIComponent (value)
Expires instanceof Date & (cookie + ='; expires=' + expires.toGMTString ())
Path & (cookie + ='; path=' + path)
Domain & (cookie + ='; domain=' + domain)
Secure & (cookie + ='; secure')
[xss_clean] = cookie
}
/ * *
* delete cookie
* in javascript, there is no api for deleting cookie directly, only by setting the expiration time
* set it to a certain time in the past and let the cookie expire to delete it.
, /
Del: function (name, path, domain, secure) {
This.set (name,'', new Date (0), path, domain, secure)
}
}
The following is to store the cookie and set the expiration date:
/ / cookie expiration time, early the next morning
Var expires = new Date (). GetTime () + 30 * 24 * 60 * 60 * 1000) .setHours (0,0,0,0))
/ / cookie value to be stored
Var value='100'
Cookie.set ("key", value, expires)
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