bootstrap弹出MODAL窗，并动态传值。

代码：

<div class="modal fade" id="qrcode" tabindex="-1" role="dialog" aria-labelledby="information">
  <div class="modal-dialog">
    <div class="modal-content">
      <div class="modal-header">
        <button type="button" class="close" data-dismiss="modal">
          <span>×</span>
        </button>
        <h4 class="modal-title">请扫描二维码，完成支付</h4>
      </div>
      <div class="modal-body" style="text-align: center">
        <p id="message"></p>
        <img src="" alt="QRCode" id="scan">
      </div>
    </div>
  </div>
</div>
<button id="popup" class="btn  btn-primary btn-lg btn-block">我弹</button>

$(function () {
  $('#popup').on('click', function(){
    $('#qrcode').modal('show');
  });
  $('#qrcode').on('show.bs.modal', function (event) {
    var modal = $(this);  //get modal itself
    modal.find('.modal-body #message').text('your message');
    modal.find('.modal-body #scan').attr("src", 'image src');
  });
});