-class="{'btn-success':!cracker.skipCloneCode}">开启
                                            </button>
                                            <button ng-disabled="expression" type="button" class="btn btn-md btn-default"
                                                    ng-click="cracker.skipCloneCode=true"
                                                    ng-class="{'btn-danger':cracker.skipCloneCode}">关闭
                                            </button>
                              