2-9 js基础 cookie封装

// JavaScript Document
'use strict';
function setCookie(sName,sValue,iDay){
    if(iDay){
        var oDate = new Date();
        oDate.setDate(oDate.getDate()+iDay);
        document.cookie=sName+'='+sValue+'; PATH=/; EXPIRES='+oDate.toGMTString();
    }else{
        document.cookie=sName+'='+sValue+'; PATH=/';
    }
}
function getCookie(sName){
    var arr=document.cookie.split('; ');
    for(var i=0;i<arr.length;i++){
        var arr2=arr[i].split('=');
        if(arr2[0]==sName){
            return arr2[1];
        }
    }
}
function removeCookie(sName){
    setCookie(sName,1,-1);
}