JS - BOOTSTRAP MODAL IFRAME

js
----------------
$('.btnchart').unbind('click');
    $('.btnchart').click(function(){

            var adminid = $(this).data('id');
            //alert(adminid);
            $('#chartmodal .modal-body').html('<iframe src="chatp.php?pair='+adminid+'" width="1015" height="640" scrolling="no" seamless="seamless" frameBorder="0"></iframe>');
            $('#chartmodal').modal({show:true});

      });

html
----------------------
<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8">
    <title>title</title>
    <link rel="stylesheet" href="style.css">
    <script src="script.js"></script>
  </head>
  <body>


<!-- TradingView Widget BEGIN -->
<div class="tradingview-widget-container">
  <div id="tradingview_b1a12"></div>
  <script type="text/javascript" src="https://s3.tradingview.com/tv.js"></script>
  <script type="text/javascript">
  new TradingView.widget(
  {
  "width": 980,
  "height": 610,
  "symbol": "BINANCE:<?php echo $a = $_GET['pair'] ? $_GET['pair'] : "BNBUSDT"; ?>",
  "interval": "D",
  "timezone": "Etc/UTC",
  "theme": "Dark",
  "style": "1",
  "locale": "it",
  "toolbar_bg": "#f1f3f6",
  "enable_publishing": false,
  "allow_symbol_change": true,
  "container_id": "tradingview_b1a12"
}
  );
  </script>
</div>
<!-- TradingView Widget END -->


  </body>
</html>

bootstrap
--------------
<div class="modal fade" id="chartmodal" tabindex="-1" role="dialog" aria-labelledby="chartmodalLabel" aria-hidden="true">
  <div class="modal-dialog" role="document" style="width:1055px; height:660px; background-color: #31353D;max-width: none;">
    <div class="modal-content">
      <div class="modal-header">
        <h5 class="modal-title" id="chartmodalLabel"><span style="color: white;"><strong>CHART</strong></span></h5>
        <button type="button" class="close" data-dismiss="modal" aria-label="Close">
          <span aria-hidden="true">&times;</span>
        </button>
      </div>
      <div class="modal-body" style="width: 1055px; height: 660px;">
      </div>
      <div class="modal-footer">
        <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
      </div>
    </div>
  </div>
</div>