获取Bootstrap.modal的值

<!-- 模态框 -->
<div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel">
  <div class="modal-dialog" role="document">
    <div class="modal-content">
      <div class="modal-header">
        <h4 class="modal-title" id="myModalLabel">模态框标题</h4>
        <button type="button" class="close" data-dismiss="modal" aria-label="Close">
          <span aria-hidden="true">&times;</span>
        </button>
      </div>
      <div class="modal-body">
        <input type="text" id="inputValue" placeholder="请输入值">
      </div>
      <div class="modal-footer">
        <button type="button" class="btn btn-primary" id="submitBtn">提交</button>
        <button type="button" class="btn btn-secondary" data-dismiss="modal">关闭</button>
      </div>
    </div>
  </div>
</div>

<!-- 触发模态框的按钮 -->
<button type="button" class="btn btn-primary" data-toggle="modal" data-target="#myModal">
  打开模态框
</button>

$(document).ready(function() {
  // 监听提交按钮点击事件
  $("#submitBtn").click(function() {
    // 获取输入框的值
    var value = $("#inputValue").val();
    
    // 打印值到控制台
    console.log(value);
    
    // 可以在这里进行后续的数据处理、提交等操作
  });
});