onnxruntime/docs/get-started/with-javascript.md

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JavaScript	Get Started	true	6

Get started with ORT for JavaScript

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ONNX Runtime JavaScript API is the unified interface used by ONNX Runtime Node.js binding, ONNX Runtime Web, and ONNX Runtime for React Native.

Contents

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ONNX Runtime Node.js binding

ONNX Runtime Node.js binding can be achieved by installing and importing.

Install

# install latest release version
npm install onnxruntime-node

Import

// use ES6 style import syntax (recommended)
import * as ort from 'onnxruntime-node';

// or use CommonJS style import syntax
const ort = require('onnxruntime-node');

Examples

• Follow the Quick Start instructions for ONNX Runtime Node.js binding.

Supported Versions

ONNX Runtime Node.js binding supports Node.js v12.x+ or Electron v5.x+

ONNX Runtime Web

You can install and import ONNX Runtime Web.

Install

# install latest release version
npm install onnxruntime-web

# install nightly build dev version
npm install onnxruntime-web@dev

Import

// use ES6 style import syntax (recommended)
import * as ort from 'onnxruntime-web';

// or use CommonJS style import syntax
const ort = require('onnxruntime-web');

Examples

ONNX Runtime Web can also be imported via a script tag in a HTML file, from a CDN server. Here are some examples:

• Quick Start (using bundler)
• Quick Start (using script tag)
• ONNX Runtime Web for In Browser Inference
• Inference in Javascript with ONNX Runtime Web

Supported Versions

ONNX Runtime supports mainstream modern browsers/OS on Windows, Ubuntu, macOS, Android, and iOS. You can check the compatibility of ONNX Runtime with modern browsers and operating systems for your desktop and mobile platforms. In-browser inference is possible with ONNX Runtime Web JavaScript that can enable cross-platform portability for web-applications.

ONNX Runtime for React Native

You can install and import ONNX Runtime Web for React Native.

Install

# install latest release version
npm install onnxruntime-react-native

Import

// use ES6 style import syntax (recommended)
import * as ort from 'onnxruntime-react-native';

// or use CommonJS style import syntax
const ort = require('onnxruntime-react-native');

Builds

Builds are published to npm and can be installed using npm install

Package	Artifact	Description	Supported Platforms
Node.js binding	onnxruntime-node	CPU (Release)	Windows x64 CPU NAPI_v3, Linux x64 CPU NAPI_v3, MacOS x64 CPU NAPI_v3
Web	onnxruntime-web	CPU and GPU	Browsers (wasm, webgl), Node.js (wasm)
React Native	onnxruntime-react-native	CPU	Android, iOS

• For Node.js binding, to use on platforms without pre-built binaries, you can build Node.js binding from source and consume using npm install <onnxruntime_repo_root>/js/node/.
• Consider the options and considerations for building a Web app with ONNX Runtime Web using JavaScript.
• Explore a simple web application to classify images with ONNX Runtime Web.

API Reference

See ONNX Runtime JavaScript API{:target="_blank"} for API reference. Check out the ONNX Runtime Web demos! for image recognition, handwriting analysis, real-time emotion detection, object detection, and so on.

See also:

• ONNX Runtime JavaScript examples and API Usage.

• Typescript declarations for Inference Session, Tensor, and Environment Flags for reference.