let data={"checker_b":{"d47c4bbb-e17c-4940-88bf-b9afe460cbab":{"use_gen":"true","gender":"m","count":"4","time":1596495685900},"b183fdce-9524-4bb4-8b05-4052715e2154":{"use_gen":"true","count":"1","time":1596495651444,"gender":"m"}},"checker":{"8c44a872-8a6e-4392-8bb1-660d57dbe2f7":{"use_gen":"false","count":"4","time":1596495697977,"gender":"w"},"1f42968f-29d5-4b48-a15d-5e686dc038fc":{"use_gen":"false","time":1596495697558,"count":"1","gender":"m"}}}


const checker=data.checker;

const checker_b=data.checker_b;


const wefw=Object.keys(checker_b);



d47c4bbb-e17c-4940-88bf-b9afe460cbab


b183fdce-9524-4bb4-8b05-4052715e2154 

얘네들 안에 있는 use_gen, gender에 접근하고 싶은데 어떻게 해야돼ㅜ checker_b.d47c4bbb-e17c-4940-88bf-b9afe460cbab.use_gen 하면 되긴하는데 

checker_b.wefw[0].use_gen 이렇게 해야된단 말이야 다른 방법 없나?