Created
August 9, 2019 10:23
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IMC Calculator
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| <div id="root"> | |
| <!-- This div's content will be managed by React. --> | |
| </div> |
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| function OutputIMC(props){ | |
| return ( | |
| <div> | |
| {(props.kg/Math.pow((props.cm)/100,2)).toFixed(2)} | |
| </div> | |
| ) | |
| } | |
| class InputKG extends React.Component { | |
| constructor(props){ | |
| super(props); | |
| } | |
| onChange(e) { | |
| this.props.onWeightChange(e.target.value); | |
| } | |
| render(){ | |
| return( | |
| <input type="text" value= {this.props.Weight} onChange={this.onChange.bind(this)} /> | |
| ) | |
| } | |
| } | |
| class InputCM extends React.Component { | |
| constructor(props){ | |
| super(props); | |
| } | |
| onChange(e){ | |
| this.props.onHeightChange(e.target.value); | |
| } | |
| render(){ | |
| return( | |
| <input type="text" value = {this.props.Height} onChange={this.onChange.bind(this)} /> | |
| ) | |
| } | |
| } | |
| class Inputs extends React.Component { | |
| constructor(props){ | |
| super(props); | |
| } | |
| handleWeightChange(val){ | |
| this.props.onWeightChange(val); | |
| } | |
| handleHeightChange(val){ | |
| this.props.onHeightChange(val); | |
| } | |
| render () { | |
| return( | |
| <div> | |
| kg:<InputKG Weight={this.props.kg} onWeightChange={this.handleWeightChange.bind(this)}/> | |
| cm:<InputCM Height={this.props.cm} onHeightChange={this.handleHeightChange.bind(this)}/> | |
| </div> | |
| ) | |
| } | |
| } | |
| class App extends React.Component { | |
| constructor(props){ | |
| super(props); | |
| this.state = ({kg: 80, cm: 185}); | |
| } | |
| handleWeightChange(val){ | |
| this.setState({kg: val}); | |
| } | |
| handleHeightChange(val){ | |
| this.setState({cm: val}); | |
| } | |
| render(){ | |
| return ( | |
| <div> | |
| <Inputs | |
| kg={this.state.kg} | |
| cm={this.state.cm} | |
| onWeightChange={this.handleWeightChange.bind(this)} | |
| onHeightChange={this.handleHeightChange.bind(this)} /> | |
| <OutputIMC | |
| kg={this.state.kg} | |
| cm={this.state.cm} | |
| /> | |
| </div> | |
| ) | |
| } | |
| } | |
| ReactDOM.render( | |
| <App />, | |
| document.getElementById('root') | |
| ); |
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| <script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.3.1/react.js"></script> | |
| <script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.3.1/react-dom.js"></script> |
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