2/29/2024 0 Comments Free Cookie for iphone instalIf you search the Web for the JavaScript code to create cookies, you'll find a thousand examples. So whether you're using CGI, Microsoft's Active Server Pages (supported by IIS 3.0 or later), or JavaScript, you use the same code to tell the browser to read, write, or delete a cookie. However, with CGI or any other server-side tool, the steps for implementing cookies are nearly the same, since all cookie processing is performed by the browser's Document Object. JavaScript is simpler and doesn't require server-side programming. Web builders can create cookies by using a CGI program or JavaScript. ![]() Ironically, this function-the key that locks up what many perceive as DoubleClick's evil cookie jar-is itself a cookie. Nevertheless, enough users have found this particular trail of bread crumbs so unacceptable that DoubleClick was forced to provide a free method to disable its tracking mechanism. Rather, the company uses the information solely to deliver customized advertising on DoubleClick Network sites. Each time a visitor connects to a DoubleClick site, the DoubleClick server reads and/or writes a cookie to their hard disk, in the process compiling extensive data about the user's activities on those sites.ĭoubleClick is quick to point out that it does not gather or store usernames, email addresses, or telephone numbers nor does it sell or rent the information it collects. ![]() The DoubleClick Network attempts to develop customer profiles and present those users with banner ads targeted toward their interests. In fact, the cookie controversy might have faded by now, except that at least one banner advertising network has used cookies to track users' Web activities in a manner that many people find objectionable. Word is slowly spreading that cookies aren't the poison pellets they've been made out to be. There is no way a cookie can rifle through the contents of the user's hard drive, nor can it haphazardly broadcast the client's private data across the Internet. For instance, a cookie can be read only by the site domain that created it, and can store only information supplied by the site or by the user. Most-if not all-of these claims were patently false. So why are many Web users-and even some Web builders-scared to death of cookies? In our example above, the information just indicates where the request came from, but in other cases, a site might transmit a user's login name and password in the URL, exposing them to prying eyes.Ĭookies would seem to have it all over these methods in terms of ease of use, performance, flexibility, and reliability. For one thing, anyone looking over the site client's shoulder can view the identifying information attached to the URL. The URL suffix method, meanwhile, is rife with security concerns. To use hidden fields, you must process every page request as a "form Submit"-a method that looks increasingly anachronistic in the age of dynamic HTML. The ?cnet.tkr suffix tells the server where the request originated, information the server wouldn't get with a standard request for that page.īoth hidden fields and URL state data have problems, however. At least two other methods were in use long before anyone had ever heard of a cookie: transmitting state data via hidden fields in a form, and appending state data to the end of a URL.Īs an example of the latter approach, note the ?cnet.tkr designation after this URL. While you could use a cookie to save all of a customer's registration form data, it's far more efficient and secure to simply store an ID number on the cookie, and then use that number to retrieve the remainder of the information from the server-side databaseĬookies aren't the only way to maintain state variables. For instance, if you use a database table on your server to record a customer's login information, preferred form of payment, delivery address, and the contents of their shopping cart, then the only thing you might need to store in the cookie is a pointer to the customer's record in that table. Depending on your server-side database facilities, that information could be quite minimal. It simply isn't possible to build a successful e-commerce site without some mechanism for recognizing users as they move from one page to another.Ĭookies let you tag your visitors with just enough information to identify who they are and what they're up to. Salespeople who can't remember the name of their best customers, or how those shoppers like to pay for merchandise, or whether or not they've already paid, aren't likely to be stars. ![]() On an informational Web site, a lack of user data is definitely annoying, but on a commerce-oriented site, it's downright crippling.
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