Примеры скриптов для клиента на языке JavaScript JavaScript

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 <html> <head> <script 
language="JavaScript"> // Boolean variable specified if alert should be displayed 
if cookie exceeds 4KB var caution = false // name - name of the cookie // value 
- value of the cookie // [expires] - expiration date of the cookie (defaults to 
end of current session) // [path] - path for which the cookie is valid (defaults 
to path of calling document) // [domain] - domain for which the cookie is valid 
(defaults to domain of calling document) // [secure] - Boolean value indicating 
if the cookie transmission requires a secure transmission // * an argument defaults 
when it is assigned null as a placeholder // * a null placeholder is not required 
for trailing omitted arguments function setCookie(name, value, expires, path, 
domain, secure) { var curCookie = name + "=" + escape(value) + ((expires) ? "; 
expires=" + expires.toGMTString() : "") + ((path) ? "; path=" + path : "") + ((domain) 
? "; domain=" + domain : "") + ((secure) ? "; secure" : "") if (!caution || (name 
+ "=" + escape(value)).length <= 4000) document.cookie = curCookie else if 
(confirm("Cookie exceeds 4KB and will be cut!")) document.cookie = curCookie } 
// name - name of the desired cookie // * return string containing value of specified 
cookie or null if cookie does not exist function getCookie(name) { var prefix 
= name + "=" var cookieStartIndex = document.cookie.indexOf(prefix) if (cookieStartIndex 
== -1) return null var cookieEndIndex = document.cookie.indexOf(";", cookieStartIndex 
+ prefix.length) if (cookieEndIndex == -1) cookieEndIndex = document.cookie.length 
return unescape(document.cookie.substring(cookieStartIndex + prefix.length, cookieEndIndex)) 
} // name - name of the cookie // [path] - path of the cookie (must be same as 
path used to create cookie) // [domain] - domain of the cookie (must be same as 
domain used to create cookie) // * path and domain default if assigned null or 
omitted if no explicit argument proceeds function deleteCookie(name, path, domain) 
{ if (getCookie(name)) { document.cookie = name + "=" + ((path) ? "; path=" + 
path : "") + ((domain) ? "; domain=" + domain : "") + "; expires=Thu, 01-Jan-70 
00:00:01 GMT" } } // date - any instance of the Date object // * you should hand 
all instances of the Date object to this function for "repairs" // * this function 
is taken from Chapter 14, "Time and Date in JavaScript", in "Learn Advanced JavaScript 
Programming" function fixDate(date) { var base = new Date(0) var skew = base.getTime() 
if (skew > 0) date.setTime(date.getTime() - skew) } </script> </head> <body> 
<script language="JavaScript"> <!-- var now = new Date() fixDate(now) now.setTime(now.getTime() 
+ 365 * 24 * 60 * 60 * 1000) var visits = getCookie("counter") if (!visits) visits 
= 1 else visits = parseInt(visits) + 1 setCookie("counter", visits, now) document.write("Вы 
были здесь " + visits + " раз(а).") // --> </script> </body> </html> 

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