本地存储 cookie 的封装，提供简单的 API

cookie("test","tank",1800)  //设置 cookie 的值，生存时间半个小时
cookie("test")              //获取 cookie 的值，显示tank
cookie("test",null)         //删除cookie test
cookie()                    //清空cookie

cookie.set("test","tank",1800)  //====cookie("test","tank",1800)
cookie.get("test")              //====cookie("test")
cookie.remove("test")           //====cookie("test",null)
cookie.clear()                  //====cookie()

cookie.all()                    //获取所有 cookie

cookie.set({
   name1: 'value1',
   name2: 'value2'
});

cookie("test","tank",30)    //设置cookie，并设置过期时间30天

cookie("test","123",{       //设置cookie，并设置过期时间7天，路径、域
    "expires": 7,
    "path": '/',
    "domain":""
});

cookie({"test":"123","test2":"456"},{  //批量设置
    "expires": 7,
    "path": '/',
    "domain":""
});

store.get("wcj1") //获取wcj1的字符串数据
store("wcj1") //功能同上

cookie.remove("test") //删除cookie test
cookie("test",null) //这样也是 删除cookie test

cookie("test","123",{
    "expires": 7,
    "path": '/',
    "domain":""
});
cookie({"test":"123"},{
    "expires": 7,
    "path": '/',
    "domain":""
});