how to get html get id value in input

Question

hello I'm new in html I'm trying to get id value in input field. now I'm abele to get id value in dropdown input , now I'm trying to get in normal input.

I need get ID value in this input

 <div class="col-md-3">
 <div class="form-group">
     <label  > PRICE:<span style="color:red;">*</span> </label>
     <input   class="form-control  " name="course_Price" id="course_Price" required> </div>
  </div>
  </div>

my script for get value in dropdown field

<script type="text/javascript">
    $(document).ready(function() {
        $('#student_courses').on('change', function() {
            var stateID = $(this).val();
            if(stateID) {
                $.ajax({
                    url: '/Student_Course_get_price/'+stateID,
                    type: "GET",
                    dataType: "json",
                    success:function(data) {                      
                        $('#course_Price').empty();
                        $.each(data, function(key, value) {
                        $('#course_Price').append('<option value="'+ value +'">''</option>');
                        });
                    } 
                });
            }else{
                $('#course_Price').empty();
            }
        });
    });
</script>

My dropdown input

  <div class="col-md-2">
     <div class="form-group">
         <label for="videoUrl1">Course Fees :<span style="color:red;">*</span></label>
          <select name="course_Price" id="course_Price" class="form-control dynamic" data-dependent="course_Price">
       <option value=""></option>
          </select>
      </div>
   </div>