小编Kev*_*abu的帖子

我是角度2和4的新手.我想用ngx-bootstrap警报和模态创建自定义通知.我搜索了一些样本.但那些并不简单.我只需要一个简单的蓝图来创建服务,接口和组件的通知.

请任何人用示例代码指导我.

我试图用密码值确认密码.我按照Async验证器标准完成了.但我想知道它没有工作,并给我以下错误.请告诉任何人如何解决此错误.

返回Promise或Observable的预期验证器.

这是我的代码.

呼叫验证器:

cPass: ['', Validators.compose([
  Validators.required, 
  Validators.maxLength(32),
  Validators.minLength(10)
]),
  this.validPassword.bind(this)
]

自定义验证功能:

validPassword(control: AbstractControl) {            
  const isEqual = Observable.of(this.password == control.value);
  return isEqual ? { valid : true } : null;         
}

我创建了角度为5.2.0的c3条形图。一切都很好。但是我只想使用karma和茉莉与进行测试npm run test。但是我遇到了以下问题。我希望它与rxjs函数有关。但是我无法理解错误的核心。请帮助任何人解决此问题。

TypeError: _this.handler.handle is not a function
    at MergeMapSubscriber.project (http://localhost:9876/_karma_webpack_/webpack:/C:/Workspace/datawens-master/node_modules/@angular/common/esm5/http.js:1466:80)
    at MergeMapSubscriber.webpackJsonp.../../../../rxjs/_esm5/operators/mergeMap.js.MergeMapSubscriber._tryNext (http://localhost:9876/_karma_webpack_/webpack:/C:/Workspace/datawens-master/node_modules/rxjs/_esm5/operators/mergeMap.js:128:1)
    at MergeMapSubscriber.webpackJsonp.../../../../rxjs/_esm5/operators/mergeMap.js.MergeMapSubscriber._next (http://localhost:9876/_karma_webpack_/webpack:/C:/Workspace/datawens-master/node_modules/rxjs/_esm5/operators/mergeMap.js:118:1)
    at MergeMapSubscriber.webpackJsonp.../../../../rxjs/_esm5/Subscriber.js.Subscriber.next (http://localhost:9876/_karma_webpack_/webpack:/C:/Workspace/datawens-master/node_modules/rxjs/_esm5/Subscriber.js:92:1)
    at ScalarObservable.webpackJsonp.../../../../rxjs/_esm5/observable/ScalarObservable.js.ScalarObservable._subscribe (http://localhost:9876/_karma_webpack_/webpack:/C:/Workspace/datawens-master/node_modules/rxjs/_esm5/observable/ScalarObservable.js:51:1)
    at ScalarObservable.webpackJsonp.../../../../rxjs/_esm5/Observable.js.Observable._trySubscribe (http://localhost:9876/_karma_webpack_/webpack:/C:/Workspace/datawens-master/node_modules/rxjs/_esm5/Observable.js:172:1)
    at ScalarObservable.webpackJsonp.../../../../rxjs/_esm5/Observable.js.Observable.subscribe (http://localhost:9876/_karma_webpack_/webpack:/C:/Workspace/datawens-master/node_modules/rxjs/_esm5/Observable.js:160:1)
    at MergeMapOperator.webpackJsonp.../../../../rxjs/_esm5/operators/mergeMap.js.MergeMapOperator.call (http://localhost:9876/_karma_webpack_/webpack:/C:/Workspace/datawens-master/node_modules/rxjs/_esm5/operators/mergeMap.js:92:1)
    at Observable.webpackJsonp.../../../../rxjs/_esm5/Observable.js.Observable.subscribe (http://localhost:9876/_karma_webpack_/webpack:/C:/Workspace/datawens-master/node_modules/rxjs/_esm5/Observable.js:157:1)
    at FilterOperator.webpackJsonp.../../../../rxjs/_esm5/operators/filter.js.FilterOperator.call (http://localhost:9876/_karma_webpack_/webpack:/C:/Workspace/datawens-master/node_modules/rxjs/_esm5/operators/filter.js:61:1)

我使用以下命令在Google Compute Engine上访问我的实例:

gcutil ssh my-instance-name

但它给了我这个错误:

ssh: connect to host ip-address port 22: Connection refused

我检查并停用了防火墙,但我仍然收到此错误.有人可以告诉我如何解决这个问题吗？