Untitled

<!DOCTYPE html>
<html>

  <head>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
    <script src="script.js"></script>
  </head>

  <body>
    <button id="call">클릭!</button>
    <p id="show"></p>
  </body>

</html>

$(function(){
  $('#call').click(function(){
    $('#show').html('....loading...');

    $.ajax({
        type: "GET",
        url: "https://www.kobis.or.kr/kobisopenapi/webservice/rest/boxoffice/searchWeeklyBoxOfficeList.json?key=430156241533f1d058c603178cc3ca0e&targetDt=20171110",
        success:function(data){
            $('#show').html(JSON.stringify(data));
        }
    })
})
})