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I mean, I want to track when a user leaves the app, closing browser or tabs.
Components and Directives has a lifecycle hook called ngOnDestroy, which is called when the component is destroyed, but it can't catch when the user leaves the app
import { Component, OnInit } from '@angular/core'; @Component({ moduleId: module.id, selector: 'app', templateUrl: 'app.component.html' }) export class AppComponent implements OnDestroy { constructor() { } ngOnDestroy() { alert(`I'm leaving the app!`); } } If the user closes the browser, the alert is not executed.
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To handle the browser tab close even in React: Use the useEffect hook to add an event listener. Listen for the beforeunload event. The beforeunload event is triggered when the tab is about to be unloaded.
Use the Pin tab option to keep Prevent Close available in Chrome. To make this as painless as possible, I recommend pinning this website to your browser then moving the tab out of the way. To do that open Prevent Close, and then right-click the tab with your mouse. From the context menu select Pin tab.
JavaScript provides an in-built function named close() to close the browser window that is opened by using window. open() method.
A. The procedure for closing all open Chrome browser tabs has changed over the years, but on most recent Android tablets, press down on the “x” on the end of any open tab. Leave your finger on the tab until the Close All Tabs option appears on screen and then select that option to shut down all of the open pages.
You can listen to the unload or beforeunload events like this:
export class AppComponent { @HostListener('window:unload', [ '$event' ]) unloadHandler(event) { // ... } @HostListener('window:beforeunload', [ '$event' ]) beforeUnloadHandler(event) { // ... } } See also
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