Is React Native Java or JavaScript?

React Native is a framework that allows you to build native mobile apps using JavaScript. Normally, you’d need to program your mobile app using Java (for Android) and Swift/Obj-C (for iOS).

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React Native uses JavaScriptCore (JavaScript engine in Safari) on Android/ iOS simulators and devices . In case of Android, React Native bundles the JavaScriptCore along with the application. In case of iOS, React Native uses the JavaScriptCore provided by the iOS platform.

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