Introduction to TrackJS
TrackJS is an amazing JavaScript error monitoring service that helps developers track and fix errors in their web applications. With its user-friendly interface and comprehensive API, TrackJS makes it easy to get insights into errors and improve the performance of your applications.
Getting Started with TrackJS
To begin using TrackJS, you need to sign up and get an account. Once you have your account, you can integrate TrackJS into your application by including their JavaScript snippet in your code.
<script src="https://cdn.trackjs.com/releases/current/tracker.js"></script>
<script>
window.TrackJS && TrackJS.install({ token: "your-token-here" });
</script>
Using TrackJS API
TrackJS provides several APIs to help you capture and log errors effectively. Let’s explore some useful API examples:
Track a Custom Error
try {
// Some code that might throw an error
} catch (e) {
TrackJS.track(e);
}
Log a Message
You can log custom messages to TrackJS:
TrackJS.console.log("This is a custom log message.");
TrackJS Track Method
TrackJS.track("This is a custom error message.");
TrackJS Track Method with Metadata
TrackJS.track({
message: "A user action failed",
data: {
userId: "1234",
action: "click"
}
});
TrackJS Add Metadata
You can add metadata to errors:
TrackJS.addMetadata("userRole", "admin");
TrackJS Remove Metadata
You can also remove metadata:
TrackJS.removeMetadata("userRole");
TrackJS Application Example
Let’s create a simple app that could generate an error and logs it using TrackJS.
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<script src="https://cdn.trackjs.com/releases/current/tracker.js"></script>
<script>
window.TrackJS && TrackJS.install({ token: "your-token-here" });
</script>
<title>TrackJS Example</title>
</head>
<body>
<h1>TrackJS Error Logging Example</h1>
<button id="errorButton">Generate Error</button>
<script>
document.getElementById("errorButton").addEventListener("click", function() {
try {
// This will throw an error
let result = nonExistentFunction();
} catch (e) {
TrackJS.track(e);
}
});
</script>
</body>
</html>
By clicking the “Generate Error” button, an error is triggered and logged to TrackJS for further analysis.
TrackJS is a powerful tool for JavaScript developers and can significantly improve your application’s reliability and user experience by effectively tracking errors and performance issues.
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