Question

尝试设置属性类型时，我收到错误Cannot find name 'Subscription'。我从哪个包中导入它？

import { Component, OnDestroy, OnInit } from '@angular/core';
import { ActivatedRoute, Router } from '@angular/router';

// I'm missing an import here. Just don't know which package to load from.

@Component({
  moduleId: module.id,
  selector: 'my-component',
  templateUrl: 'my.component.html',
  styleUrls: ['my.component.css']
})
export class MyComponent implements OnInit, OnDestroy {

  private sub: any;

  constructor(private route: ActivatedRoute,
    private router: Router) {}

  ngOnInit() {
    this.sub = this.route.params.subscribe(params => {
       let id = +params['id']; // (+) converts string 'id' to a number
     });
  }

  ngOnDestroy() {
    this.sub.unsubscribe();
  }

}

修改：提供更详细的代码示例。

Answer 1

你必须像这样导入它：

fstream

编辑 Angular 6

import { Subscription } from 'rxjs/Subscription';

看看这里：https://angular.io/docs/ts/latest/guide/router.html 并且该文档中有几个关联者。

Answer 2

以角度6和角度7

import { Subscription } from 'rxjs';

Answer 3

您必须从“ rxjs / Rx ”导入订阅。

import { Subscription } from "rxjs/Rx";

Answer 4

在这种情况下，只需该行加载类型

import {Subscription}  from "rxjs/Rx";

我们可以按预期使用它：

private sub: Subscription;

Answer 5

您可以使用以下内容导入订阅

import { Subscription } from 'rxjs/internal/Subscription';

Angular 2：找不到姓名＆＃39;订阅＆＃39;

5 个答案: