Bootstrap switch 开关事件处理

    需要使用Bootstrap switch，实现通过、拒绝功能并且在开关至拒绝时，显示textarea框输入原因。    1、css引用    <link href="switch/css/bootstrap-switch.min.css" rel="stylesheet">    2、js引用    <script src="switch/js/bootstrap-switch.min.js"></script>    3、页面（使用modal打开，若须使用需引用对应的js和css）     <div class="modal inmodal" id="approve_modal" tabindex="-1" role="dialog" aria-hidden="true">            <div class="modal-dialog">                    <div class="modal-content animated bounceInRight">                            <div class="modal-header">                                    <button type="button" class="close" data-dismiss="modal">                                    <span aria-hidden="true">&times;</span><span class="sr-only">关闭</span>                                    </button>                                    <h1 class="modal-title">月 报 审 批</h1>                                    <br>                                    <input type="checkbox" name="my-checkbox" id="my-checkbox">                            </div>                            <div class="modal-body">                                    <div class="form-group animated fadeIn" id="approve_input" >                                            <label >若不通过，请说明原因:</label>                                             <textarea id="approve_area" rows="5" placeholder="填写内容请控制在250字以内。" class="form-control" maxlength="250">                                            </textarea>                                    </div>                            </div>                            <div class="modal-footer">                                    <button type="button" class="btn btn-white" data-dismiss="modal">关闭</button>                                    <button type="button" class="btn btn-primary" id="submit">提交</button>                            </div>                    </div>            </div>    </div>    4、js页面    $("[name='my-checkbox']").bootstrapSwitch({        onText : "拒绝",        offText : "通过",        onColor : "danger",        offColor : "success",        size : "large",                    //onSwitchChange方法监测switch开关状态        onSwitchChange : function() {                    //.prop方法查看input的checked属性，即使查看其开关状态            var checkedOfAll=$("#my-checkbox").prop("checked");                            //false、true对应input的checked属性，显示和隐藏输入框            if (checkedOfAll==false){                $('#approve_input').hide()            }            else {                $('#approve_input').show()            }        }        });    $('#submit').click(function () {        var checkedOfAll=$("#my-checkbox").prop("checked");        var checkinfo=$('#approve_area').val();        alert(checkedOfAll+checkinfo)    })