# CloudBees Feature Management - Server Side Rendering (SSR) SDK 🦆 CloudBees Feature Management is a secure feature management solution for the enterprise. > Accelerate development and minimize the risk of deploying new code with simple to create feature flags, controlled rollouts, advanced target groups & deployment rules. ## Getting Started Please see the detailed instructions in our docs on how to [add CloudBees Feature Management to your project](https://docs.cloudbees.com/docs/cloudbees-feature-management/). ## Documentation Getting started guide, use cases, examples and videos can be found at [CloudBees Feature Management documentation](https://docs.cloudbees.com/docs/cloudbees-feature-management/). ## About CloudBees Feature Management JavaScript SSR SDK for web applications that use server side rendering. Define and use simple and advanced feature flags, static and computed custom properties in code. Control your application features via CloudBees Feature Management dashboard. ## Installation ``` npm i rox-ssr --save ``` ## TypeScript Support This package includes TypeScript definitions. Import and use with full type safety: ```typescript import {RoxString, RoxNumber, Flag, Rox} from 'rox-ssr'; ``` ## Usage ### Basic Usage Obtain an application key by registering at [CloudBees Unify](https://cloudbees.io). ```javascript import {RoxString, RoxNumber, Flag, Rox} from 'rox-ssr'; const appSettingsContainer = { shouldShowWelcome: new Flag(), textColor: new RoxString('red', ['green', 'blue']), textSize: new RoxNumber(15, [20, 45]) }; const onRoxReady = () => { if (appSettingsContainer.shouldShowWelcome.isEnabled()) { const color = appSettingsContainer.textColor.getValue() const size = appSettingsContainer.textSize.getValue() const div = document .createElement('div') .textContent('Hello world!') .setAttribute('style', `color: ${color}; font-size: ${size}px`) const body = document.getElementsByTagName('body')[0] body.appendChild(div) } }; Rox.register('settingsNamespace', appSettingsContainer); Rox.setup('', { configurationFetchedHandler: onRoxReady }); ``` ### Hydrate browser-side Rox with flag configuration In order to ensure the consistency of feature flags between the server and the web clients, the CloudBees Feature Management configuration can easily be sent to the clients. React example, assuming you already have initialized Rox. Add this to the server-side code, within the `` tag: ```javascript import {Rox} from 'rox-ssr'; // ... // Your component render() method render() { return (