javascript $.ajax header추가

$.ajax({
    type: "GET",
    url: "https://dapi.kakao.com/v2/local/search/keyword.json?query=" + keyword,
    beforeSend: function (xhr) {
        xhr.setRequestHeader("Authorization", "KakaoAK APIKEY");
    },
    success: function (res) {
        console.log(res);
    }
})

beforeSend에 setRequestHeader를 사용해서 추가하면 됨