Supported BrowsersBy default, the generated project supports all modern browsers. Support for Internet Explorer 9, 10, and 11 requires polyfills. For a set of polyfills to support older browsers, use react-app-polyfill. Supported Language FeaturesThis project supports a superset of the latest JavaScript standard. In addition to ES6 syntax features, it also supports: Exponentiation Operator (ES20
These docs are old and won’t be updated. Go to react.dev for the new React docs. These new documentation pages teach modern React and include live examples: Responding to Events Handling events with React elements is very similar to handling events on DOM elements. There are some syntax differences: React events are named using camelCase, rather than lowercase. With JSX you pass a function as the
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