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JavaScript Basics

Inserting Javascript

Complete Tutorial

Advance DHTML Tutorial


Cookie Protection			[View Sample]

You can use a basic cookie script to keep visitors (that don't have the cookie on their system) from viewing certain parts of your site (kind of.... There are always ways around it). The cookie is placed when the password provided is correct. Then, when they are forwarded to the password protected page, the cookie allows them to stay. Those without the cookie are sent back.


Insert into <HEAD>
<SCRIPT LANGUAGE="JavaScript"> <!-- Begin function getCookieVal (offset) { var endstr = document.cookie.indexOf (";", offset); if (endstr == -1) endstr = document.cookie.length; return unescape(document.cookie.substring(offset, endstr)); } function GetCookie (name) { var arg = name + "="; var alen = arg.length; var clen = document.cookie.length; var i = 0; while (i < clen) { var j = i + alen; if (document.cookie.substring(i, j) == arg) return getCookieVal (j);i = document.cookie.indexOf(" ", i) + 1; if (i == 0) break; } return null; } function SetCookie (name, value) { var argv = SetCookie.arguments; var argc = SetCookie.arguments.length; var expires = (argc > 2) ? argv[2] : null; var path = (argc > 3) ? argv[3] : null; var domain = (argc > 4) ? argv[4] : null; var secure = (argc > 5) ? argv[5] : false; document.cookie = name + "=" + escape (value) + ((expires == null) ? "" : ("; expires=" + expires.toGMTString())) + ((path == null) ? "" : ("; path=" + path)) + ((domain == null) ? "" : ("; domain=" + domain)) + ((secure == true) ? "; secure" : ""); } function DeleteCookie () { var exp = new Date(); exp.setTime (exp.getTime() - 1000000000); // This cookie is history var cval = GetCookie ('FreeStuffL'); document.cookie ='FreeStuffL' + "=" + cval + "; expires=" + exp.toGMTString(); } function cookieCreater () { if(GetCookie('FreeStuffL') == null) { var FreeStuffL_Name = prompt ("What name do you want to go by?", "" ); if (FreeStuffL_Name != null && FreeStuffL_Name != "") { var expdate = new Date (); expdate.setTime(expdate.getTime() + (24 * 60 * 60 * 1000 * 365)); SetCookie('FreeStuffL', FreeStuffL_Name, expdate); alert ("You now are logged in! From now on, when you come to this page, you will be forwarded to the Password Protected Members-Only Area. Please do not tell anyone your entry code. At this new page, you will be shown a list of functions. Have fun!"); location.href = "cookie-in.html" } } else { DeleteCookie (); cookieCreater () } } if(GetCookie('FreeStuffL') != null) { location.href="cookie-in.html" } function check() { var tester = document.login.numOne.value + document.login.numTwo.value; if (tester == "") { alert ("I'm sorry, that code is not correct."); } else { if (tester == document.login.numThree.value) { alert ("That is correct!"); cookieCreater (); } else { alert ("Nope!"); } } } // End --> </SCRIPT>

Insert into <BODY>
<center> <form name='login'> Enter your login code (FORMAT: login # one, login # two, login # three): <p><input TYPE='text' NAME='numOne' SIZE=15><br> <input TYPE='text' NAME='numTwo' SIZE=15 ><br> <input TYPE='text' NAME='numThree' SIZE=15 ><br> <input TYPE='button' VALUE='Login' ONCLICK='check()'> </form> </center> <font size=1 color=white> This page requires Javascript to run! Please get Netscape 2.0 or greater! </font> <form name="login2"> <input type=hidden name="go" value="cookie-in.html"> </form>

Other Options