# OpenTelemetry JavaScript Examples

This directory contains a number of examples of how to run real applications
with OpenTelemetry JavaScript.

## Maintained Examples

Maintained Examples are expected to be updated with every OpenTelemetry JavaScript release, to
use the latest and greatest features, and best practices.

| Name                                      | Description                                                                                                              | Complexity Level |
|-------------------------------------------|--------------------------------------------------------------------------------------------------------------------------|------------------|
| [basic-tracer-node](basic-tracer-node/)   | Basic use of Tracing in Node.js application                                                                              | Beginner         |
| [opentelemetry-web](opentelemetry-web/)          | Basic use of Tracing and Metrics in a Web application                                                                    | Beginner         |
| [http](http/)                             | HTTP Instrumentation to automatically collect trace data and export them to the backend of choice                        | Intermediate     |
| [https](https/)                           | HTTPS Instrumentation to automatically collect trace data and export them to the backend of choice                       | Intermediate     |
| [grpc](grpc-js/)                          | gRPC Instrumentation to automatically collect trace data and export them to the backend of choice                        | Intermediate     |
| [otlp-exporter-node](otlp-exporter-node/) | This example shows how to use `@opentelemetry/exporter-otlp-http` to instrument a simple Node.js application             | Intermediate     |
| [opentracing-shim](opentracing-shim/)     | This is a simple example that demonstrates how existing OpenTracing instrumentation can be integrated with OpenTelemetry | Intermediate     |
| [esm-http-ts](esm-http-ts/)     | This is a simple example that demonstrates tracing HTTP request, with an app written in TypeScript and transpiled to ES Modules. | Intermediate     |

Examples of experimental packages can be found at [experimental/examples](../experimental/examples).

Additional examples can be found at [@opentelemetry/opentelemetry-js-contrib][opentelemetry-js-contrib-examples].

## Contributing

Please see [CONTRIBUTING.md](https://github.com/open-telemetry/opentelemetry-js/blob/main/CONTRIBUTING.md) for instructions on how to contribute.

## LICENSE

Apache License 2.0

[opentelemetry-js-contrib-examples]: https://github.com/open-telemetry/opentelemetry-js-contrib/tree/main/examples