@splitsoftware/splitio
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# Split SDK for JavaScript
[](https://badge.fury.io/js/%40splitsoftware%2Fsplitio) [](https://github.com/splitio/javascript-client/actions/workflows/ci-cd.yml) [](https://greenkeeper.io/)
## Overview
This SDK is designed to work with Split, the platform for controlled rollouts, which serves features to your users via feature flags to manage your complete customer experience.
[](https://twitter.com/intent/follow?screen_name=splitsoftware)
## Compatibility
The JavaScript SDK is an isomorphic library for both Node.js and Web browser environments.
It supports **Node.js version 14.x or later**.
For browsers, the library was build to support ES5 syntax and all major browsers. *However, there are a few polyfills that would be required when targeting old browsers that don't have native support for Promises, Map and Set global objects. You should include polyfills for those, like [es6-promise](https://github.com/stefanpenner/es6-promise) for promises.*
## Getting started
Below is a simple Node.js example that describes the instantiation and most basic usage of our SDK:
```javascript
// Import the SDK
var SplitFactory = require('@splitsoftware/splitio').SplitFactory;
// Instantiate the SDK
var factory = SplitFactory({
core: {
authorizationKey: 'YOUR_SDK_KEY'
}
});
// Get the client instance you'll use
var client = factory.client();
// Set a callback to listen for the SDK_READY event, to make sure the SDK is properly loaded before asking for a treatment
client.on(client.Event.SDK_READY, function() {
var treatment = client.getTreatment('CUSTOMER_ID', 'FEATURE_FLAG_NAME');
if (treatment == 'on') {
// insert code here for on treatment
} else if (treatment == 'off') {
// insert code here for off treatment
} else {
// insert your control treatment code here
}
});
```
Please refer to [JavaScript SDK (client-side)](https://help.split.io/hc/en-us/articles/360020448791-JavaScript-SDK) or [Node.js SDK (server-side)](https://help.split.io/hc/en-us/articles/360020564931-Node-js-SDK) to learn about all the functionality provided by our SDK as well as specifics for each environment and the configuration options available for tailoring it to your current application setup.
## Submitting issues
The Split team monitors all issues submitted to this [issue tracker](https://github.com/splitio/javascript-client/issues). We encourage you to use this issue tracker to submit any bug reports, feedback, and feature enhancements. We'll do our best to respond in a timely manner.
## Contributing
Please see [Contributors Guide](CONTRIBUTORS-GUIDE.md) to find all you need to submit a Pull Request (PR).
## License
Licensed under the Apache License, Version 2.0. See: [Apache License](http://www.apache.org/licenses/).
## About Split
Split is the leading Feature Delivery Platform for engineering teams that want to confidently deploy features as fast as they can develop them. Split’s fine-grained management, real-time monitoring, and data-driven experimentation ensure that new features will improve the customer experience without breaking or degrading performance. Companies like Twilio, Salesforce, GoDaddy and WePay trust Split to power their feature delivery.
To learn more about Split, contact hello@split.io, or get started with feature flags for free at https://www.split.io/signup.
Split has built and maintains SDKs for:
* .NET [Github](https://github.com/splitio/dotnet-client) [Docs](https://help.split.io/hc/en-us/articles/360020240172--NET-SDK)
* Android [Github](https://github.com/splitio/android-client) [Docs](https://help.split.io/hc/en-us/articles/360020343291-Android-SDK)
* Angular [Github](https://github.com/splitio/angular-sdk-plugin) [Docs](https://help.split.io/hc/en-us/articles/6495326064397-Angular-utilities)
* Elixir thin-client [Github](https://github.com/splitio/elixir-thin-client) [Docs](https://help.split.io/hc/en-us/articles/26988707417869-Elixir-Thin-Client-SDK)
* Flutter [Github](https://github.com/splitio/flutter-sdk-plugin) [Docs](https://help.split.io/hc/en-us/articles/8096158017165-Flutter-plugin)
* GO [Github](https://github.com/splitio/go-client) [Docs](https://help.split.io/hc/en-us/articles/360020093652-Go-SDK)
* iOS [Github](https://github.com/splitio/ios-client) [Docs](https://help.split.io/hc/en-us/articles/360020401491-iOS-SDK)
* Java [Github](https://github.com/splitio/java-client) [Docs](https://help.split.io/hc/en-us/articles/360020405151-Java-SDK)
* JavaScript [Github](https://github.com/splitio/javascript-client) [Docs](https://help.split.io/hc/en-us/articles/360020448791-JavaScript-SDK)
* JavaScript for Browser [Github](https://github.com/splitio/javascript-browser-client) [Docs](https://help.split.io/hc/en-us/articles/360058730852-Browser-SDK)
* Node.js [Github](https://github.com/splitio/javascript-client) [Docs](https://help.split.io/hc/en-us/articles/360020564931-Node-js-SDK)
* PHP [Github](https://github.com/splitio/php-client) [Docs](https://help.split.io/hc/en-us/articles/360020350372-PHP-SDK)
* PHP thin-client [Github](https://github.com/splitio/php-thin-client) [Docs](https://help.split.io/hc/en-us/articles/18305128673933-PHP-Thin-Client-SDK)
* Python [Github](https://github.com/splitio/python-client) [Docs](https://help.split.io/hc/en-us/articles/360020359652-Python-SDK)
* React [Github](https://github.com/splitio/react-client) [Docs](https://help.split.io/hc/en-us/articles/360038825091-React-SDK)
* React Native [Github](https://github.com/splitio/react-native-client) [Docs](https://help.split.io/hc/en-us/articles/4406066357901-React-Native-SDK)
* Redux [Github](https://github.com/splitio/redux-client) [Docs](https://help.split.io/hc/en-us/articles/360038851551-Redux-SDK)
* Ruby [Github](https://github.com/splitio/ruby-client) [Docs](https://help.split.io/hc/en-us/articles/360020673251-Ruby-SDK)
For a comprehensive list of open source projects visit our [Github page](https://github.com/splitio?utf8=%E2%9C%93&query=%20only%3Apublic%20).
**Learn more about Split:**
Visit [split.io/product](https://www.split.io/product) for an overview of Split, or visit our documentation at [help.split.io](https://help.split.io) for more detailed information.