---
title: JavaScript client library for the InfluxDB v2 API
description: The InfluxDB v2 JavaScript client library for Node.js and browsers integrates with the InfluxDB v2 API to write data to an InfluxDB Core cluster.
url: https://docs.influxdata.com/influxdb3/core/reference/client-libraries/v2/javascript/
estimated_tokens: 498
product: InfluxDB 3 Core
version: core
---

# JavaScript client library for the InfluxDB v2 API

#### Use InfluxDB 3 clients to query

InfluxDB 3 supports [compatibility endpoints for *writing data*](/influxdb3/core/write-data/compatibility-apis/) using InfluxDB v2 and v1 tools. However, the `/api/v2/query` API endpoint and associated tooling, such as InfluxDB v2 client libraries and the `influx` CLI, *can’t query* data stored in InfluxDB 3 Core.

[InfluxDB 3 client libraries](/influxdb3/core/reference/client-libraries/v3/) are available that integrate with your code to write and query data stored in InfluxDB 3 Core.

[**Compare tools you can use**](/influxdb3/core/get-started/#tools-to-use) to interact with InfluxDB 3 Core.

The [InfluxDB v2 JavaScript client library](https://github.com/influxdata/influxdb-client-js) for Node.js and browsers integrates with the InfluxDB v2 API to write data to an InfluxDB 3 Core cluster.

### [JavaScript for browsers](/influxdb3/core/reference/client-libraries/v2/javascript/browser/)

Use the InfluxDB v2 JavaScript client library in browsers and front-end clients to write data to an InfluxDB Core database.

### [Node.js](/influxdb3/core/reference/client-libraries/v2/javascript/nodejs/)

The [InfluxDB v2 JavaScript client library](https://github.com/influxdata/influxdb-client-js) for Node.js integrates with the InfluxDB v2 API to write data to an InfluxDB Core database.

[client libraries](/influxdb3/core/tags/client-libraries/) [JavaScript](/influxdb3/core/tags/javascript/) [NodeJS](/influxdb3/core/tags/nodejs/)