How to Use a Progress Bar #9602

[ritaMagerDev]

How to Use a Progress Bar #9602
Unanswered
760985933 asked this question in Q&A
760985933 on Feb 16

I currently have a requirement where clicking a button triggers an action, and the progress is displayed on a progress bar.

Here’s how it works:

The total execution time is calculated in advance.
This time is converted into a progress value and written to the database.
The progress bar function updates by fetching this value from the database using a SELECT query and then returning the progress value.
The issue:
The current implementation causes the entire page to refresh continuously instead of updating only the progress bar.

Possible Solutions
To resolve the issue of unnecessary page refreshes, you can use one of the following approaches:

1. Use AJAX for Partial Updates
   Implement an AJAX call to fetch the progress value from the backend at regular intervals.
   Update only the progress bar on the front end without refreshing the entire page.
   Example (JavaScript with jQuery):

javascript
Copy code
function updateProgressBar() {
$.ajax({
url: '/get-progress', // Backend endpoint to fetch progress
method: 'GET',
success: function (response) {
$('#progress-bar').css('width', response.progress + '%');
$('#progress-bar').text(response.progress + '%');
},
error: function (error) {
console.error('Error fetching progress:', error);
}
});
}

// Call the function every 1 second
setInterval(updateProgressBar, 1000);
2. Use WebSockets for Real-Time Updates
Implement WebSockets to push progress updates from the backend to the frontend in real time.
Example:

Backend sends progress updates through WebSocket.
Frontend listens to the updates and adjusts the progress bar dynamically.
3. Use Framework-Specific Features
If you’re using a modern frontend framework (React, Vue, Angular):
Use state management to update the progress bar dynamically without refreshing the page.
React Example:

jsx
Copy code
import React, { useState, useEffect } from 'react';

function ProgressBar() {
const [progress, setProgress] = useState(0);

useEffect(() => {
    const interval = setInterval(() => {
        fetch('/get-progress')
            .then(response => response.json())
            .then(data => setProgress(data.progress))
            .catch(console.error);
    }, 1000);

    return () => clearInterval(interval); // Cleanup on unmount
}, []);

return (
    <div className="progress-bar-container">
        <div
            className="progress-bar"
            style={{ width: `${progress}%` }}
        >
            {progress}%
        </div>
    </div>
);

}

export default ProgressBar;
4. Optimize Backend Logic
Ensure that the backend only handles the progress updates and does not force a page refresh.
Use efficient database queries to minimize response time.
Would you like assistance with implementing one of these solutions or debugging the current setup? Let me know!