detect browser or current tab closed in vue js in javascript

You can use the beforeunload event to detect when the current tab or browser is being closed. In Vue.js, you can add an event listener to the window object in the created lifecycle hook of your component. Here's an example:

index.tsx
created() {
  window.addEventListener('beforeunload', this.handleBeforeUnload);
},

methods: {
  handleBeforeUnload(event) {
    // Do your cleanup here, such as saving data to backend
    // This message is optional and will be displayed by the browser
    event.returnValue = 'Are you sure you want to leave?';
  }
}
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In the handleBeforeUnload method, you can perform any necessary cleanup, such as saving data to the backend or notifying other users that you are leaving. The returnValue property of the event object is optional and can be set to display a warning message to the user when they try to close the tab or browser.

Don't forget to remove the event listener in the beforeDestroy lifecycle hook to prevent memory leaks:

index.tsx
beforeDestroy() {
  window.removeEventListener('beforeunload', this.handleBeforeUnload);
},
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