Capturing front end JS errors?

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Posted on by AJ-09040936-0

With Javascript generally recommended as the solution to most validation/visibility/manipulation in Power Pages, has anyone looked at capturing errors and logging them if they occur on the frontend?

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ArchitectMadhan 1,580 on at

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Capturing front end JS errors?

Capturing and logging frontend JavaScript errors is a great way to monitor and improve the user experience on your Power Pages. Here are some methods to achieve this:
Using window.onerror
The window.onerror event handler can be used to catch and log errors globally. Here's a basic example:
window.onerror = function(message, source, lineno, colno, error) {
    // Log the error details
    console.log(`Error: ${message} at ${source}:${lineno}:${colno}`);
    // Send error details to the server
    fetch('/logError', {
        method: 'POST',
        headers: {
            'Content-Type': 'application/json'
        },
        body: JSON.stringify({
            message: message,
            source: source,
            lineno: lineno,
            colno: colno,
            error: error ? error.stack : null
        })
    });
    // Prevent default error handling
return true;
};
Using Error Monitoring Tools
There are several tools available that can help you capture and log frontend errors more efficiently:

Sentry: Provides detailed error tracking and monitoring, allowing you to trace errors through your stack.

TrackJS: Captures JavaScript errors and groups occurrences of the same error together.

Rollbar: Offers real-time error tracking and grouping of similar errors.

Explanation

window.onerror: This method captures errors globally and logs them to the console. It also sends the error details to a server endpoint for further analysis.

Error Monitoring Tools: These tools provide more advanced features like error grouping, real-time monitoring, and detailed stack traces.

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-ArchitectMadhan