국세청 사업자번호 진위확인

 var ItemJSON;

    ItemJSON = '{"b_no": ["'+bNo+'"]}';

    console.log("ItemJSON",ItemJSON)

	URL = "http://api.odcloud.kr/api/nts-businessman/v1/status?serviceKey=발급받은서비스키";  //Your URL

    var xmlhttp = new XMLHttpRequest();
    xmlhttp.onreadystatechange = callbackFunction(xmlhttp);
    xmlhttp.open("POST", URL, false);
    xmlhttp.setRequestHeader("Content-Type", "application/json");
//    xmlhttp.setRequestHeader('Authorization', 'Basic ' + window.btoa('apiusername:apiuserpassword')); //in prod, you should encrypt user name and password and provide encrypted keys here instead 
    xmlhttp.onreadystatechange = callbackFunction(xmlhttp);
    xmlhttp.send(ItemJSON);
    console.log(xmlhttp.responseText);