var cookieUtil = {
    //创建cookies
    setCookie: function(name, value, exp) {
        var cookieText = encodeURIComponent(name) + '=' + encodeURIComponent(value);
        //encodeURIComponent()把字符串进行URI编码
        if(exp && exp instanceof Date) {
            cookieText += ';expires' + exp;
        }
        document.cookie = cookieText;
    },

    //获取cookie
    getCookie:function(name){
        var cookieText=decodeURIComponent(document.cookie);
        //decodeURIComponent()把字符串进行URI解码
        var cookieArr=cookieText.split("; ");
        var obj={};
        for(var i=0;i<cookieArr.length;i++){
            cookieArr01=cookieArr[i].split("=");
            obj[cookieArr01[0]]=cookieArr01[1];
        }
        
        return obj[name];
    },

    //删除cookie
    delCookie: function(name) {
        var exp = new Date();
        var arrCookie = cookieUtil.getCookie(name);
        if(arrCookie != '' || arrCookie!=undefined) {
            document.cookie = name + "=" + arrCookie + ";expires=" + exp.toGMTString();
        }
    }
}