function setCookie(name, value, time) { var strsec = getsec(time); var exp = new Date(); exp.setTime(exp.getTime() + strsec * 1); document.cookie = name + "=" + escape(value) + ";expires=" + exp.toGMTString(); //expires 由十六进制转义系列替换的字符串 //expires到期时间 } function getCookie(name) { var arr, reg = new RegExp("(^| )" + name + "=([^;]*)(;|$)"); if (arr = document.cookie.match(reg)) return unescape(arr[2]); else return null; } function getsec(str) { var str1 = str.substring(1, str.length) * 1; var str2 = str.substring(0, 1); if (str2 == "s") { return str1 * 1000; } else if (str2 == "h") { return str1 * 60 * 60 * 1000; } else if (str2 == "d") { return str1 * 24 * 60 * 60 * 1000; } } //s20是代表20秒 //h是指小时,如12小时则是:h12 //d是天数,30天则:d30 function delCookie(name) { var exp = new Date(); exp.setTime(exp.getTime() - 1); var cval = getCookie(name); if (cval != null) document.cookie = name + "=" + cval + ";expires=" + exp.toGMTString(); }