component.ts文件在下面给出。为什么即使从rxjs / add / observable / interval导入间隔后,它也会引发错误。
import { Component, OnInit } from '@angular/core';
import { Observable } from 'rxjs/Observable';
import 'rxjs/add/observable/interval';
@Component({
selector: 'app-home',
templateUrl: './home.component.html',
styleUrls: ['./home.component.css']
})
export class HomeComponent implements OnInit {
constructor() { }
ngOnInit() {
const myNumber = Observable.interval(1000);
myNumber.subscribe(
(number: number) => {
console.log(number);
}
);
}
}
浏览器中的错误消息:
错误TypeError: rxjs_Observable__WEBPACK_IMPORTED_MODULE_2 __。Observable.interval是 不是功能 在HomeComponent.push ../ src / app / home / home.component.ts.HomeComponent.ngOnInit (home.component.ts:15) 在checkAndUpdateDirectiveInline(core.js:20665) 在checkAndUpdateNodeInline(core.js:21929) 在checkAndUpdateNode(core.js:21891) 在debugCheckAndUpdateNode(core.js:22525) 在debugCheckDirectivesFn(core.js:22485) at Object.eval [作为updateDirectives](HomeComponent_Host.ngfactory.js?[sm]:1) 在Object.debugUpdateDirectives [作为updateDirectives](core.js:22477) 在checkAndUpdateView(core.js:21873) 在callViewAction(core.js:22114)上View_HomeComponent_Host_0 @ HomeComponent_Host.ngfactory.js? [sm]:1 proxyClass @ Compiler.js:17945 push ../ node_modules/@angular/core/fesm5/core.js.DebugContext_.logError @ core.js:22729 push ../ node_modules/@angular/core/fesm5/core.js.ErrorHandler.handleError @ core.js:14645(匿名)@ core.js:16895 push ../ node_modules / zone.js / dist / zone.js.ZoneDelegate.invoke @ zone.js:388 push ../ node_modules / zone.js / dist / zone.js.Zone.run @ zone.js:138 push ../ node_modules/@angular/core/fesm5/core.js.NgZone.runOutsideAngular @ core.js:16115 推../node_modules/@angular/core/fesm5/core.js.ApplicationRef.tick @ core.js:16895(匿名)@ core.js:16779 push ../ node_modules / zone.js / dist / zone.js.ZoneDelegate.invoke @ zone.js:388 onInvoke @ core.js:16156 push ../ node_modules / zone.js / dist / zone.js.ZoneDelegate.invoke @ zone.js:387 push ../ node_modules / zone.js / dist / zone.js.Zone.run @ zone.js:138 push ../ node_modules/@angular/core/fesm5/core.js.NgZone.run @ core.js:16070下一个@ core.js:16779 schedulerFn @ core.js:12609 push ../ node_modules / rxjs / _esm5 / internal / Subscriber.js.SafeSubscriber。 tryOrUnsub @ Subscriber.js:196 推送../node_modules/rxjs/_esm5/internal/Subscriber.js.SafeSubscriber.next @ Subscriber.js:134 推送../node_modules/rxjs/_esm5/internal/Subscriber.js.Subscriber._next @ Subscriber.js:77 推送../node_modules/rxjs/_esm5/internal/Subscriber.js.Subscriber.next @ Subscriber.js:54 push ../ node_modules / rxjs / _esm5 / internal / Subject.js.Subject.next @ Subject.js:47 push ../ node_modules/@angular/core/fesm5/core.js.EventEmitter.emit @ core.js:12593 checkStable @ core.js:16125 onHasTask @ core.js:16169 push ../ node_modules / zone.js / dist / zone.js.ZoneDelegate.hasTask @ zone.js:441 push ../ node_modules / zone.js / dist / zone.js.ZoneDelegate._updateTaskCount @ zone.js:461 push ../ node_modules / zone.js / dist / zone.js.Zone._updateTaskCount @ zone.js:285 push ../ node_modules / zone.js / dist / zone.js.Zone.runTask @ zone.js:205rainMicroTaskQueue @ zone.js:595 Promise.then(异步) scheduleMicroTask @ zone.js:578 push ../ node_modules / zone.js / dist / zone.js.ZoneDelegate.scheduleTask @ zone.js:410 push ../ node_modules / zone.js / dist / zone.js.Zone.scheduleTask @ zone.js:232 push ../ node_modules / zone.js / dist / zone.js.Zone.scheduleMicroTask @ zone.js:252 scheduleResolveOrReject @ zone.js:862 ZoneAwarePromise.then @ zone.js:962 push ../ node_modules/@angular/core/fesm5/core.js.PlatformRef.bootstrapModule @ core.js:16660 ./src/main.ts @ main.ts:11 __webpack_require @引导程序:78 0 @ main.ts:12 webpack_require @引导程序:78 checkDeferredModules @引导程序:45 webpackJsonpCallback @引导程序:32(匿名)@ main.js:1 HomeComponent_Host.ngfactory.js? [sm]:1个错误上下文 DebugContext_ {view:{…},nodeIndex:0,nodeDef:{…},elDef:{…}, elView:{…}} View_HomeComponent_Host_0 @ HomeComponent_Host.ngfactory.js? [sm]:1 proxyClass @ Compiler.js:17945 push ../ node_modules/@angular/core/fesm5/core.js.DebugContext_.logError @ core.js:22729 push ../ node_modules/@angular/core/fesm5/core.js.ErrorHandler.handleError @ core.js:14650(匿名)@ core.js:16895 push ../ node_modules / zone.js / dist / zone.js.ZoneDelegate.invoke @ zone.js:388 push ../ node_modules / zone.js / dist / zone.js.Zone.run @ zone.js:138 push ../ node_modules/@angular/core/fesm5/core.js.NgZone.runOutsideAngular @ core.js:16115 推../node_modules/@angular/core/fesm5/core.js.ApplicationRef.tick @ core.js:16895(匿名)@ core.js:16779 push ../ node_modules / zone.js / dist / zone.js.ZoneDelegate.invoke @ zone.js:388 onInvoke @ core.js:16156 push ../ node_modules / zone.js / dist / zone.js.ZoneDelegate.invoke @ zone.js:387 push ../ node_modules / zone.js / dist / zone.js.Zone.run @ zone.js:138 push ../ node_modules/@angular/core/fesm5/core.js.NgZone.run @ core.js:16070下一个@ core.js:16779 schedulerFn @ core.js:12609 push ../ node_modules / rxjs / _esm5 / internal / Subscriber.js.SafeSubscriber。 tryOrUnsub @ Subscriber.js:196 推送../node_modules/rxjs/_esm5/internal/Subscriber.js.SafeSubscriber.next @ Subscriber.js:134 推送../node_modules/rxjs/_esm5/internal/Subscriber.js.Subscriber._next @ Subscriber.js:77 推送../node_modules/rxjs/_esm5/internal/Subscriber.js.Subscriber.next @ Subscriber.js:54 push ../ node_modules / rxjs / _esm5 / internal / Subject.js.Subject.next @ Subject.js:47 push ../ node_modules/@angular/core/fesm5/core.js.EventEmitter.emit @ core.js:12593 checkStable @ core.js:16125 onHasTask @ core.js:16169 push ../ node_modules / zone.js / dist / zone.js.ZoneDelegate.hasTask @ zone.js:441 push ../ node_modules / zone.js / dist / zone.js.ZoneDelegate._updateTaskCount @ zone.js:461 push ../ node_modules / zone.js / dist / zone.js.Zone._updateTaskCount @ zone.js:285 push ../ node_modules / zone.js / dist / zone.js.Zone.runTask @ zone.js:205rainMicroTaskQueue @ zone.js:595 Promise.then(异步) scheduleMicroTask @ zone.js:578 push ../ node_modules / zone.js / dist / zone.js.ZoneDelegate.scheduleTask @ zone.js:410 push ../ node_modules / zone.js / dist / zone.js.Zone.scheduleTask @ zone.js:232 push ../ node_modules / zone.js / dist / zone.js.Zone.scheduleMicroTask @ zone.js:252 scheduleResolveOrReject @ zone.js:862 ZoneAwarePromise.then @ zone.js:962 push ../ node_modules/@angular/core/fesm5/core.js.PlatformRef.bootstrapModule @ core.js:16660 ./src/main.ts @ main.ts:11 __webpack_require @引导程序:78 0 @ main.ts:12 webpack_require @引导程序:78 checkDeferredModules @引导程序:45 webpackJsonpCallback @引导程序:32(匿名)@ main.js:1
答案 0 :(得分:1)
尝试一下:
import { Component, OnInit } from '@angular/core';
import { interval } from 'rxjs';
@Component({
selector: 'app-home',
templateUrl: './home.component.html',
styleUrls: ['./home.component.css']
})
export class HomeComponent implements OnInit {
constructor() { }
ngOnInit() {
const myNumber = interval(1000);
myNumber.subscribe(
(number: number) => {
console.log(number);
}
);
}
}