radio动态显示隐藏事件

<div class="form-group"><label class="col-sm-3 control-label">1111</label><div class="col-sm-8"><div class="radio-box" th:each=""><input type="radio" name="gzdx"><label></label></div></div></div><div class="form-group" id="description"><label class="col-sm-3 control-label is-required">描述：</label><div class="col-sm-8"><textarea name="description" class="form-control" required></textarea></div></div>

jquery：

$(function () {$('input').on('ifChecked', function (event) {var gzdx = $(event.target).val();if (gzdx == "3") {$("#description").show();} else{$("#description").hide();}});});