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JavaScript and Cookie (1): Reading and Writing cookies

Source: Internet
Author: User
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Html code:Copy to ClipboardReference: [www.bkjia.com] <! Doctype html public "-// W3C // dtd html 4.01 // EN" "http://www.w3.org/TR/html4/strict.dtd">
<Html>
<Head>
<Meta http-equiv = "Content-Type" content = "text/html; charset = UTF-8">
<Title> JavaScript and Cookie (1) </title>
</Head>
<Body>
<Form name = "frm1" method = "post" onsubmit = "savecookie ()">
<P> CookieMessage: <input type = "text" name = "cookieInfo" size = "50"/> </p>
<P> Valid-time: <input type = "text" name = "time" size = "10" value = "30"/> Please input a integer. </p>
<Div style = "border: 1px solid # ccc;" id = "divInfo"> </div>
<P> <input type = "submit" name = "submit" value = "Submit">
<Input type = "reset" name = "reset" value = "Reset"/> </p>
<P> <input type = "button" onclick = "writeAllCookie ()" value = "writeAllCookie"/> </p>
<P> <input type = "text" name = "txtGetSpc"/> <input type = "button" value = "GetSpecificCookie" onclick = "getCk ()" </p>
</Form>
</Body>
</Html>

Js Code:

Copy to ClipboardReference: [www.bkjia.com] <script language = "JavaScript" type = "text/javascript">
/*
* Set a common Cookie function. name is a required parameter. Others are optional, so use conditional statements to determine.
* If no expiration time is set during Cookie setting, the Cookie is temporary and only available for this session.
*/
Function setcookie (name, value, expires, path, domain, secure ){
Var curcookie = name + "=" + encodeURI (value)
+ (Expires )? "; Expires =" + expires. toGMTString ():"")
+ (Path )? "; Path =" + path :"")
+ (Domain )? "; Domain =" + domain :"")
+ (Secure )? "; Secure ":"");
Document. cookie = curcookie;
}

// Write Cookie
Function savecookie (){
Var cookieInfo = document. frm1.cookieInfo. value;
Var time = document. frm1.time. value;
Var now = new Date ();
Now. setDate (now. getDate () + time );
Setcookie ("myCookie", cookieInfo, now );
Document. write (decodeURI (document. cookie ));
}

// Read all Cooke
Function writeAllCookie (){
Document. cookie = "name1 =" + encodeURI ("name 1 ");
Document. cookie = "name2 =" + encodeURI ("name 2 ");
Document. cookie = "name3 =" + encodeURI ("Name 3 ");
Var strInfo;
Var cookie = document. cookie. split (";");
For (var I = 0; I <cookie. length; I ++ ){
Var ck = cookie [I]. split ("= ");
Var cName = ck [0];
Var cValue = decodeURI (ck [1]);
StrInfo + = cName + "=" + cValue + "<br> ";
}
Document. getElementById ("divInfo"). innerHTML = strInfo;
}

/*
* Common functions for reading specific cookies
*/
Function getSpecificCookie (name ){
If (document. cookie. length> 0 ){
Start = document. cookie. indexOf (name + "= ");
If (start! =-1 ){
Start = start + name. length + 1;
End = document. cookie. indexOf (";", start );
If (end =-1 ){
End = document. cookie. length;
}
}
Return decodeURI (document. cookie. substring (start, end ));
}
Return "";
}

Function getCk (){
Name = document.frm1.txt GetSpc. value;
Alert (getSpecificCookie (name ));
}
</Script>

Source: http://www.cnblogs.com/zghlx/

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:
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