Janus Client SDK

A lightweight JavaScript library for tracking events from web applications. Automatically handles batching, retries, rate limiting, and persistence.

Lightweight (~3KB)Auto RetryBatchingPersistence

Automatic Context

Context Capture#

Every event automatically includes context about the user's environment:

json

{
    "type": "your_event",
    "payload": { /* your properties */ },
    "distinctId": "user_abc123",
    "sessionId": "sess_xyz789",
    "context": {
        "userAgent": "Mozilla/5.0...",
        "language": "en-US",
        "screen": {
            "width": 1920,
            "height": 1080,
            "colorDepth": 24
        },
        "viewport": {
            "width": 1200,
            "height": 800
        },
        "url": "https://example.com/page",
        "path": "/page",
        "referrer": "https://google.com",
        "timezone": "America/New_York",
        "timestamp": "2024-01-15T10:30:00.000Z"
    },
    "timestamp": "2024-01-15T10:30:00.000Z"
}

Automatic Page Tracking Error Handling

Need Help?

If you have questions or run into issues, check out our troubleshooting guide or reach out to our support team.

Troubleshooting Guide