---
title: Install the InfluxDB v2 JavaScript client library
description: Install the Node.js JavaScript client library to write data to an InfluxDB Cloud Dedicated database.
url: https://docs.influxdata.com/influxdb3/cloud-dedicated/reference/client-libraries/v2/javascript/nodejs/install/
estimated_tokens: 1533
product: InfluxDB Cloud Dedicated
version: cloud-dedicated
---

# Install the InfluxDB v2 JavaScript client library

### Use InfluxDB 3 clients

The `/api/v2/query` API endpoint and associated tooling, such as InfluxDB v2 client libraries and the `influx` CLI, **can’t** query an InfluxDB Cloud Dedicated cluster.

[InfluxDB 3 client libraries](/influxdb3/cloud-dedicated/client-libraries/v3/) are available that integrate with your code to write and query data stored in InfluxDB Cloud Dedicated.

InfluxDB 3 supports many different tools for [**writing**](/influxdb3/cloud-dedicated/write-data/) and [**querying**](/influxdb3/cloud-dedicated/query-data/) data. [**Compare tools you can use**](/influxdb3/cloud-dedicated/get-started/#tools-to-use) to interact with InfluxDB Cloud Dedicated.

## Install Node.js

1. Install [Node.js](https://nodejs.org/en/download/package-manager/).
    
2. Ensure that InfluxDB is running and you can connect to it. For information about what URL to use to connect to your InfluxDB Cloud Dedicated cluster, contact your InfluxData account representative.
    
3. In your terminal, create a directory for your Node.js project and change to it.
    
    ```sh
    mkdir influx-node-app && cd influx-node-app
    ```
    
4. Enter the following command to generate an npm package for your project.
    
    -   `npm`: the package manager included with Node.js
    -   `-y`: uses defaults for the package and bypasses prompts
    
    ```sh
    npm init -y
    ```
    

## Install TypeScript

Many of the client library examples use [TypeScript](https://www.typescriptlang.org/). Follow these steps to initialize the TypeScript project:

1. Install TypeScript and type definitions for Node.js.
    
    ```sh
    npm i -g typescript && npm i --save-dev @types/node
    ```
    
2. Enter the following command to create a TypeScript configuration (`tsconfig.json`) with default values:
    
    ```sh
    tsc --init
    ```
    
3. Run the TypeScript compiler. To recompile your code automatically as you make changes, pass the `--watch, -w` flag to the compiler.
    
    ```sh
    tsc --watch
    ```
    

## Install dependencies

Use the `@influxdata/influxdb-client` JavaScript client library to write data in InfluxDB Cloud Dedicated.

Open a new terminal window and install the `@influxdata/influxdb-client` package for querying and writing data:

```sh
npm i --save @influxdata/influxdb-client
```

The `@influxdata/influxdb-client-apis` client library package won’t work with InfluxDB Cloud Dedicated. It only works with InfluxDB v2 management APIs.

## Configure credentials

The client examples include an [`env`](https://github.com/influxdata/influxdb-client-js/blob/master/examples/env.js) module for accessing your InfluxDB properties from environment variables or from `env.js`. The examples use these properties to interact with the InfluxDB API.

Set environment variables or update `env.js` with your InfluxDB [database](/influxdb3/cloud-dedicated/admin/databases/), organization (required, but ignored), [database token](/influxdb3/cloud-dedicated/admin/tokens/#database-tokens), and cluster URL.

```sh
export INFLUX_URL=https://cluster-id.a.influxdb.io
export INFLUX_TOKEN=DATABASE_TOKEN
export INFLUX_ORG=ORG_ID
export INFLUX_DATABASE=DATABASE_NAME
```

Replace the following:

-   **`DATABASE_TOKEN`**: InfluxDB database token
-   **`ORG_ID`**: An arbitrary string (InfluxDB ignores this credential, but the client library requires it)
-   **`DATABASE_NAME`**: InfluxDB database name

## Next steps

Once you’ve installed the client library and configured credentials, you’re ready to [write data](/influxdb3/cloud-dedicated/reference/client-libraries/v2/javascript/nodejs/write/) to InfluxDB.

[Write data](/influxdb3/cloud-dedicated/reference/client-libraries/v2/javascript/nodejs/write/)