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How Can I Dynamically Track Browser Download Completion for Client-Side Generated Files?
How Can I Dynamically Track Browser Download Completion for Client-Side Generated Files?
Jan 03, 2025 pm 06:59 PM
Generate Dynamically-Generated File and Detect Browser Download Reception
When enabling file downloads from dynamically-generated content, the subsequent browser behavior can pose challenges in tracking download completion. This issue presents a need to monitor browser actions to hide waiting indicators appropriately.
The provided solution employs JavaScript client-side scripting:
- Generate a unique token: Create a random token to uniquely identify the download request.
- Submit the download request: Include the token in the request through a GET/POST field.
- Display loading indicator: Show the "waiting" indicator to inform the user.
- Start a timer: Check for a cookie named "fileDownloadToken" at regular intervals (e.g., every second).
- Hide indicator on match: If the cookie exists and matches the token, hide the "waiting" indicator.
Correspondingly, the server-side logic:
- Retrieve token from request: Look for the GET/POST token within the request.
- Set cookie on token availability: If a non-empty token exists, drop a cookie named "fileDownloadToken" with its value set to the token.
This approach provides browser-specific compatibility without requiring temporary file creation on the server.
Client-Side Implementation (JavaScript):
[JavaScript code provided in the original response]
Example Server-Side Implementation (PHP):
[PHP code provided in the original response]
The above is the detailed content of How Can I Dynamically Track Browser Download Completion for Client-Side Generated Files?. For more information, please follow other related articles on the PHP Chinese website!
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