bootstrap模态框传值传不过去

Question

模态框html

            <!--弹出修改蛋糕窗口-->

            <div class="modal fade" id="reviseCake" role="dialog" aria-labelledby="gridSystemModalLabel">
                <div class="modal-dialog" role="document">
                    <div class="modal-content">
                        <div class="modal-header">
                            <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
                            <h4 class="modal-title" id="gridSystemModalLabel">修改蛋糕</h4>
                        </div>
                        <div class="modal-body">
                            <div class="container-fluid">
                               <form class="form-horizontal" id="updatecakeform" >
                                    <div class="form-group ">
                                        <label for="sName" class="col-xs-3 control-label">编号：</label>
                                        <div class="col-xs-8 ">
                                            <input type="email" class="form-control input-sm duiqi" id="cakeid" placeholder="" name="cakeid"">
                                        </div>
                                    </div>
                                    <div class="form-group">
                                        <label for="sLink" class="col-xs-3 control-label">名称：</label>
                                        <div class="col-xs-8 ">
                                            <input type="" class="form-control input-sm duiqi" id="cName" placeholder="" name="cName">
                                        </div>
                                    </div>
                                    <div class="form-group">
                                        <label for="sOrd" class="col-xs-3 control-label">价格：</label>
                                        <div class="col-xs-8">
                                            <input type="" class="form-control input-sm duiqi" id="cPrice" placeholder="" name="cPrice">
                                        </div>
                                    </div>
                                    <div class="form-group">
                                        <label for="sKnot" class="col-xs-3 control-label">节日：</label>
                                        <div class="col-xs-8">
                                            <input type="" class="form-control input-sm duiqi" id="cFestival" placeholder="" name="cFestival">
                                        </div>
                                    </div>
                                    <div class="form-group">
                                        <label for="sKnot" class="col-xs-3 control-label">上传图片：</label>
                                        <div class="col-xs-8">
                                            <input type="" class="form-control input-sm duiqi" id="cImage" placeholder="" name="cImage">
                                        </div>
                                    </div>
                                    <div class="form-group">
                                        <label for="sKnot" class="col-xs-3 control-label">库存：</label>
                                        <div class="col-xs-8">
                                            <input type="" class="form-control input-sm duiqi" id="amount" placeholder="" name="amount">
                                        </div>
                                    </div>
                                    </form>
                                   </div> 

                            </div>
                        <div class="modal-footer">
                        <form action="UpdateCake">
                            <button type="button" class="btn btn-xs btn-white" data-dismiss="modal">取 消</button>
                            <button type="button" class="btn btn-xs btn-green" onclick="updateCake()">保 存</button>
                            </form>
                        </div>
                    </div>
                    <!-- /.modal-content -->
                </div>
                <!-- /.modal-dialog -->
            </div>

    按钮
    div class="col-xs-2">
                            <button class="btn btn-success btn-xs" id="update" data-toggle="modal" data-id="${cake.cakeId}" data-target="#reviseCake"  >修改</button>
                            <button class="btn btn-danger btn-xs" id="delete" data-toggle="modal" data-target="#deleteCake" data-id="${cake.cakeId}" >删除</button>
                        </div>

JS代码


       $('#reviseCake').on('show.bs.modal', function (event) {
     var a = $(event.relatedTarget) 
       var id = button.data('id')
    var modal = $(this)

    modal.find('.modal-title').text('New message to ' + id)

modal.find('.modal-body input').val(id)
    });

            效果

Answer 1

兄弟，你这个 var id = button.data('id')，button是什么，不是应该这里就报错了吗