bootstrap3 modal 事件监听多次 关闭事件绑定未解除?

html代码如下

<a id="addControllerBtn" role="button" class="btn" data-toggle="modal" onclick="controllerAdd()">添加控制器</a>
<div id="myModal" class="modal hide fade" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true" data-backdrop="static">
        <div class="modal-header">
            <button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
            <h3 id="myModalLabel">添加</h3>
          </div>
        <div class="modal-body">
              <form class="form-horizontal">                
                <div class="control-group controls-row">
                    <label class="control-label span1">控制器ID:</label>
                    <div class="controls span2">
                        <input class="input-medium" type="text" placeholder="自动赋值" />
                    </div>
                    <label class="control-label span1" style="margin-left:60px;"><font color="#FF3030">*</font>测量点编号：</label>
                    <div class="controls span2">
                        <input class="input-medium" type="text" maxlength="10" />
                    </div>
                </div>
            </form>
        </div>
        <div class="modal-footer">
            <button class="btn btn-primary btn-large" id="saveBtn">保存</button>
            <button class="btn btn-large" id="cancelBtn" data-dismiss="modal" aria-hidden="true">取消</button>
        </div>
</div>

js代码如下

 <script type="text/javascript">
    function controllerAdd(){
        alert("hello");    //测试
        $("#myModal").modal('show');
        $("#saveBtn").click(function(){
            alert("3123");    //测试
        });
    }
    $("#myModal").on("hidden", function() { 
        $(this).removeData("modal"); 
    }); 
    </script>

第一次打开模态框是正常的，点完取消，再点开模态框，点击保存，就会出现两次弹框。点击此取消，就会出现几次弹框，以此类推。找了好多方法，都没解决。我应该如何解决这个问题？

https://blog.csdn.net/princeLuan/article/details/78898277