JS实现Cookie读、写、删除操作工具类示例

本文实例讲述了JS实现Cookie读、写、删除操作工具类。分享给大家供大家参考，具体如下：

/*** *读取指定的Cookie值 readCookie(id); *@param {string} cookieName Cookie名称exOf(cookieName); if(ind==-1 cookieName==) return ; var ind1 = theCookie.indexOf(;,ind); if(ind1==-1) ind1 = theCookie.length; /*读取Cookie值*/ return unescape(theCookie.substring(ind+cookieName.length+1,ind1)); } /*** * 设置Cookie值 setCookie(id,1); * @param {string} cookieName Cookie名称 * @param {string} cookieValue Cookie值 * @param {number} nDays Cookie过期天数 */ function setCookie(cookieName, cookieValue) { /*当前日期*/ var today = new Date(); /*Cookie过期时间*/ var expire = new Date(); /*如果未设置nDays参数或者nDays为0，取默认值1*/ //if(nDays == null nDays == 0) nDays = 1; /*计算Cookie过期时间【 3600000 * 24 为一天】*/ expire.setTime(today.getTime() + 400000); //5分钟 document.cookie = cookieName + = + escape(cookieValue) + ;expires= + expire.toGMTString(); } /*** * 删除cookie中指定变量函数 * @param {string} $name Cookie名称 */ function deleteCookie($name){ var myDate=new Date(); myDate.setTime(-1000);//设置时间 document.cookie=$name+=; expires=+myDate.toGMTString(); } /*** * 删除cookie中所有定变量函数 * @param {string} cookieName Cookie名称 * @param {string} cookieValue Cookie值 * @param {number} nDays Cookie过期天数 */ function clearCookie(){ var myDate=new Date(); myDate.setTime(-1000);//设置时间 var data=document.cookie; var dataArray=data.split(; ); for(var i=0;i<dataArray.length;i++){ var varName=dataArray[i].split(=); document.cookie=varName[0]+=; expires=+myDate.toGMTString(); } }

附：JS操作cookie的小插件

var CookieUtil = { // 设置cookie set : function (name, value, expires, domain, path, secure) { var cookieText = ; cookieText += encodeURIComponent(name) + = + encodeURIComponent(value); if (expires instanceof Date) { cookieText += ; expires= + expires.toGMTString(); } if (path) { cookieText += ; path= + path; } if (domain) { cookieText += ; domain= + domain; } if (secure) { cookieText += ; secure; } document.cookie = cookieText; }, // name=value; expires=expiration_time; path=domain_path; domain=domain_name; secure // 获取cookie get : function (name) { var cookieName = encodeURIComponent(name) + =, cookieStart = document.cookie.indexOf(cookieName), cookieValue = ; if (cookieStart > -1) { var cookieEnd = document.cookie.indexOf (;, cookieStart); if (cookieEnd == -1) { cookieEnd = document.cookie.length; } cookieValue = decodeURIComponent(document.cookie.substring(cookieStart + cookieName.length, cookieEnd)); } return cookieValue; }, // 删除cookie unset : function (name, domain, path, secure) { this.set(name, , Date(0), domain, path, secure); } };

更多关于JavaScript相关内容感兴趣的读者可查看本站专题：《JavaScript数据结构与算法技巧总结》、《JavaScript遍历算法与技巧总结》、《JavaScript查找算法技巧总结》、《JavaScript动画特效与技巧汇总》、《JavaScript错误与调试技巧总结》及《JavaScript数学运算用法总结》

希望本文所述对大家JavaScript程序设计有所帮助。