JavaScript 操作cookie
阿新 • • 發佈:2019-01-01
<html> <head> <script type="text/javascript"> function getCookie(c_name) { if (document.cookie.length > 0) { c_start = document.cookie.indexOf(c_name + "="); if (c_start != -1) { c_start = c_start + c_name.length + 1; c_end = document.cookie.indexOf(";", c_start); if (c_end == -1) { c_end = document.cookie.length; } return unescape(document.cookie.substring(c_start, c_end)); } } return "" } function setCookie(c_name, value, second) { var mSecond = new Date().getTime(); mSecond = mSecond + second*1000; var exdate = new Date(); exdate.setTime(mSecond); document.cookie = c_name + "=" + escape(value) + ((second == null) ? "" : ";expires=" + exdate.toGMTString())+";path=/"; } function checkCookie() { username = getCookie('username'); if (username != null && username != "") { alert('Welcome again ' + username + '!'); } else { username = prompt('Please enter your name:', ""); if (username != null && username != "") { setCookie('username', username, 10); } } } </script> </head> <body onLoad="checkCookie()"> </body> </html>