js 操作cookie
1、设置 Cookie
function setCookie(c_name, value, expiredays) { var exdate = new Date() exdate.setDate(exdate.getDate() + expiredays) document.cookie = c_name + "=" + escape(value) + ((expiredays == null) ? "" : ";expires=" + exdate.toGMTString()) }
2、获取 Cookie
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 "" }
3、删除 Cookie
function deleteCookie(c_name) { var date = new Date(); date.setTime(date.getTime() - 10000); document.cookie = c_name + "=; expire=" + date.toGMTString(); }