typescript 如何让谷歌浏览器在 Angular 4 应用程序中全屏显示？

How to make google chrome go full screen in Angular 4 Application?

提问by Jignesh Mistry

I am developing an application where I want to implement such a thing where if user leaves from one component & enters other component, then in other component's ngOnInit method chrome browser should go full screen same as when we press Fn + F11 Key.

我正在开发一个应用程序，我想在其中实现这样的事情，如果用户离开一个组件并进入另一个组件，那么在其他组件的 ngOnInit 方法中，chrome 浏览器应该像按 Fn + F11 键一样全屏显示。

Any help or references are appreciated.

任何帮助或参考表示赞赏。

采纳答案by Krishna Rathore

You can try with requestFullscreen

你可以试试 requestFullscreen

I have create a demo on Stackblitz

我在Stackblitz上创建了一个演示

fullScreen() {
    let elem = document.documentElement;
    let methodToBeInvoked = elem.requestFullscreen ||
      elem.webkitRequestFullScreen || elem['mozRequestFullscreen']
      ||
      elem['msRequestFullscreen'];
    if (methodToBeInvoked) methodToBeInvoked.call(elem);
}

回答by Stavm

How To - Fullscreen - https://www.w3schools.com/howto/howto_js_fullscreen.asp

如何 - 全屏 - https://www.w3schools.com/howto/howto_js_fullscreen.asp

This is the current "angular way" to do it.

这是目前的“角度方式”来做到这一点。

HTML

HTML

<h2 (click)="openFullscreen()">open</h2>
<h2 (click)="closeFullscreen()">close</h2>

Component

零件

import { DOCUMENT } from '@angular/common';
import { Component, Inject, OnInit } from '@angular/core';

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.scss']
})
export class AppComponent implements OnInit {
  constructor(@Inject(DOCUMENT) private document: any) {}
  elem;

  ngOnInit() {
    this.elem = document.documentElement;
  }

  openFullscreen() {
    if (this.elem.requestFullscreen) {
      this.elem.requestFullscreen();
    } else if (this.elem.mozRequestFullScreen) {
      /* Firefox */
      this.elem.mozRequestFullScreen();
    } else if (this.elem.webkitRequestFullscreen) {
      /* Chrome, Safari and Opera */
      this.elem.webkitRequestFullscreen();
    } else if (this.elem.msRequestFullscreen) {
      /* IE/Edge */
      this.elem.msRequestFullscreen();
    }
  }

  /* Close fullscreen */
  closeFullscreen() {
    if (this.document.exitFullscreen) {
      this.document.exitFullscreen();
    } else if (this.document.mozCancelFullScreen) {
      /* Firefox */
      this.document.mozCancelFullScreen();
    } else if (this.document.webkitExitFullscreen) {
      /* Chrome, Safari and Opera */
      this.document.webkitExitFullscreen();
    } else if (this.document.msExitFullscreen) {
      /* IE/Edge */
      this.document.msExitFullscreen();
    }
  }
}

回答by Ayoub k

put the following code on the top of the component (before @Component) you want to trigger:

将以下代码放在要触发的组件顶部（@Component 之前）：

    interface FsDocument extends HTMLDocument {
      mozFullScreenElement?: Element;
      msFullscreenElement?: Element;
      msExitFullscreen?: () => void;
      mozCancelFullScreen?: () => void;
    }

    export function isFullScreen(): boolean {
      const fsDoc = <FsDocument> document;

      return !!(fsDoc.fullscreenElement || fsDoc.mozFullScreenElement || fsDoc.webkitFullscreenElement || fsDoc.msFullscreenElement);
    }

    interface FsDocumentElement extends HTMLElement {
      msRequestFullscreen?: () => void;
      mozRequestFullScreen?: () => void;
    }

    export function toggleFullScreen(): void {
      const fsDoc = <FsDocument> document;

      if (!isFullScreen()) {
        const fsDocElem = <FsDocumentElement> document.documentElement;

        if (fsDocElem.requestFullscreen)
          fsDocElem.requestFullscreen();
        else if (fsDocElem.msRequestFullscreen)
          fsDocElem.msRequestFullscreen();
        else if (fsDocElem.mozRequestFullScreen)
          fsDocElem.mozRequestFullScreen();
        else if (fsDocElem.webkitRequestFullscreen)
          fsDocElem.webkitRequestFullscreen();
      }
      else if (fsDoc.exitFullscreen)
        fsDoc.exitFullscreen();
      else if (fsDoc.msExitFullscreen)
        fsDoc.msExitFullscreen();
      else if (fsDoc.mozCancelFullScreen)
        fsDoc.mozCancelFullScreen();
      else if (fsDoc.webkitExitFullscreen)
        fsDoc.webkitExitFullscreen();
    }

    export function setFullScreen(full: boolean): void {
      if (full !== isFullScreen())
        toggleFullScreen();
    }

and on the ngOnInitmethod make a call to the setFullScreen(full: boolean)function:

并在ngOnInit方法上调用该setFullScreen(full: boolean)函数：

ngOnInit(): void {
    setFullScreen(true);
}