js 添加、获取、删除 cookie
// 保存 Cookie function setCookie(name, value) { expires = new Date(); expires.setTime(expires.getTime() + (1000 * 86400 * 365)); document.cookie = name + "=" + escape(value) + ";"; } // 获取 Cookie function getCookie(name) { cookie_name = name + "="; cookie_length = document.cookie.length; cookie_begin = 0; while (cookie_begin < cookie_length) { value_begin = cookie_begin + cookie_name.length; if (document.cookie.substring(cookie_begin, value_begin) == cookie_name) { var value_end = document.cookie.indexOf(";", value_begin); if (value_end == -1) { value_end = cookie_length; } return unescape(document.cookie.substring(value_begin, value_end)); } cookie_begin = document.cookie.indexOf(" ", cookie_begin) + 1; if (cookie_begin == 0) { break; } } return null; } // 清除 Cookie function delCookie(name) { var expireNow = new Date(); document.cookie = name + "=" + "; expires="+expireNow+"" + "; path=/"; }
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