如何返回最后一页

在Angular 2中有没有聪明的方法返回到最后一页?

类似的

this._router.navigate(LASTPAGE);

例如，C页有一个“返回”按钮，

A页-> C页，点击返回A页。 B页-> C页，点击它，回到B页。

路由器有这个历史信息吗?

当前回答

我是这么说的:

import { Location } from '@angular/common'
import { Component, Input } from '@angular/core'

@Component({
    selector: 'Back_page',
    template: `<button  (click)="onBack()">Back</button>`,
})
export class BackPageComponent {
  constructor(private location: Location) { }

  onBack() {
    this.location.back();// <-- go back to previous location
  }
}

2021-03-23 19:31:03

其他回答

检测到的未更改组件的@Parziphal答案版本:

  import { Location } from '@angular/common';
  import { Router } from '@angular/router';

  constructor(private readonly router: Router, private readonly location: Location) {
    location.onUrlChange(() => this.canGoBack = !!this.router.getCurrentNavigation()?.previousNavigation);
  }

  goBack(): void {
    if (this.canGoBack) {
      this.location.back();
    }
  }

2022-11-17 11:53:55

RC4:

import {Location} from '@angular/common';

2016-07-21 11:32:00

从beta 18开始:

import {Location} from 'angular /platform/common';

2016-06-02 13:59:11

我是这么说的:

import { Location } from '@angular/common'
import { Component, Input } from '@angular/core'

@Component({
    selector: 'Back_page',
    template: `<button  (click)="onBack()">Back</button>`,
})
export class BackPageComponent {
  constructor(private location: Location) { }

  onBack() {
    this.location.back();// <-- go back to previous location
  }
}

2021-03-23 19:31:03

是的，你能做到。在你的typescript组件上编写这段代码，然后享受吧!

import { Location } from '@angular/common'
import { Component, Input } from '@angular/core'

@Component({
    selector: 'return_page',
    template: `<button mat-button (click)="onReturn()">Back</button>`,
})
export class ReturnPageComponent {
  constructor(private location: Location) { }

  onReturn() {
    this.location.back();
  }
}

2020-11-11 07:07:17

如何返回最后一页

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