Are there any solutions available for sending a POST request before closing a tab?

Question

Are there any solutions available for sending a POST request before closing a tab?

Currently, I am in need of a solution that allows me to unlock a deal when the tab is closed. The challenge lies in the fact that the lock status is stored in my database, and I must make a POST request upon tab closure to change the status of the deal to unlocked. Utilizing "beforeunload" has proven to be quite unreliable as reported by others who have encountered similar issues (it completely fails in my case). I am looking for alternative methods to implement this API call. My technology stack includes Angular, C# ASP.NetCore, and SQL.

I attempted to use beforeunload with no success; hence, triggering the API call on tab close remains unresolved.

c#angular typescript asp.net-core

Answer 1

Answer №1

If you want to handle unload events in Angular, one approach is to create a service and attach an event listener to the 'unload' event. You can then utilize the navigator.sendBeacon() method to send data before the page unloads. Here's an example implementation:


export class UnloadDataService {

  constructor() {
    window.addEventListener('unload', this.sendDataBeforeUnload);
  }

  sendDataBeforeUnload = () => {
    const url = '/api/send-data';
    const payload = JSON.stringify({ key: 'value' });
    navigator.sendBeacon(url, payload);
  }
}

Answer 2

If you want to handle unload events in Angular, one approach is to create a service and attach an event listener to the 'unload' event. You can then utilize the navigator.sendBeacon() method to send data before the page unloads. Here's an example implementation:


export class UnloadDataService {

  constructor() {
    window.addEventListener('unload', this.sendDataBeforeUnload);
  }

  sendDataBeforeUnload = () => {
    const url = '/api/send-data';
    const payload = JSON.stringify({ key: 'value' });
    navigator.sendBeacon(url, payload);
  }
}

Answer 3

Answer №2

Perhaps you should consider utilizing WebSocket. By opening a connection on page load, the backend can then monitor when the page is closed and trigger a POST request accordingly. This approach is necessary because closing the browser directly does not activate the unload lifecycle event. However, with WebSocket, the backend can detect any loss of connection.

Answer 4

Perhaps you should consider utilizing WebSocket. By opening a connection on page load, the backend can then monitor when the page is closed and trigger a POST request accordingly. This approach is necessary because closing the browser directly does not activate the unload lifecycle event. However, with WebSocket, the backend can detect any loss of connection.

Are there any solutions available for sending a POST request before closing a tab?

Answer №1

Answer №2

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