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- <!DOCTYPE html>
- <html>
- <head>
- <script>
- function setCookie(cname, cvalue, exdays) {
- var d = new Date();
- d.setTime(d.getTime() + (exdays*24*60*60*1000)); // set time with milliseconds
- var expires = "expires=" + d.toGMTString();
- document.cookie = cname + "=" + cvalue + "; " + expires;
- }
- function getCookie(cname) {
- var name = cname + "=";
- var ca = document.cookie.split(';');
- for (var i = 0; i < ca.length; i++) {
- var c = ca[i].trim();
- // check if we have 'name=' string in cookie
- if (c.indexOf(name) == 0) {
- return c.substring(name.length, c.length);
- }
- }
- return "";
- }
- function checkCookie() {
- var user = getCookie("username");
- if (user != "") {
- alert("Welcome again " + user);
- } else {
- user = prompt("Please enter your name:", "");
- if (user != "" && user != null) {
- setCookie("username", user, 365);
- }
- }
- }
- </script>
- </head>
- <body onLoad="checkCookie();">
- </body>
- </html>
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