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Countdown Timer - Reactxp Typing CST Test

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Countdown Timer — Reactxp Code

Countdown timer starting from 10 seconds.

import RX from 'reactxp';

class CountdownApp extends RX.Component {
	constructor(props) {
		super(props);
		this.state = { count: 10 };
	}

	componentDidMount() {
		this.timer = setInterval(() => { if(this.state.count > 0) this.setState({ count: this.state.count - 1 }); }, 1000);
	}
	componentWillUnmount() { clearInterval(this.timer); }
	render() {
		return (
		<RX.View style={{ padding:20 }}>
		<RX.Text style={{ fontSize:24, marginBottom:10 }}>Time: {this.state.count}</RX.Text>
		<RX.Button onPress={() => this.setState({ count: 10 })}><RX.Text>Reset</RX.Text></RX.Button>
		</RX.View>
		);
	}
}

RX.App.register('CountdownApp', () => CountdownApp);

Reactxp Language Guide

ReactXP is a library developed by Microsoft for building cross-platform apps using a single React and React Native codebase. It enables developers to target iOS, Android, and web platforms simultaneously.

Primary Use Cases

  • ▸Cross-platform mobile apps for iOS and Android
  • ▸Web apps sharing the same codebase
  • ▸Rapid prototyping of multi-platform applications
  • ▸Enterprise apps requiring uniform UI across devices
  • ▸Integration with React ecosystem libraries and tooling

Notable Features

  • ▸Cross-platform abstractions for React and React Native
  • ▸Unified event system for gestures and interactions
  • ▸Shared styling system across platforms
  • ▸Supports both JavaScript and TypeScript
  • ▸Optimized for consistency and maintainability

Origin & Creator

Developed by Microsoft in 2016, ReactXP was created to unify mobile and web app development using React while minimizing platform-specific code.

Industrial Note

Perfect for enterprise projects requiring cross-platform consistency and rapid development using React technologies.

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