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July 31, 2022 17:02
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Actualizar el valor del padre desde el hijo con componentes de clase
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<!DOCTYPE html> | |
<html lang="en"> | |
<head> | |
<meta charset="UTF-8" /> | |
<title>porfi.dev React JS | Prueba 02</title> | |
<style> | |
.TabStrip { | |
display: flex; | |
flex-direction: row; | |
} | |
.TabStrip .TabStrip-title { | |
margin-right: 0.6rem; | |
padding: 0.5rem 1rem; | |
cursor: pointer; | |
} | |
.TabStrip .TabStrip-title-active { | |
background-color: deeppink; | |
color: white; | |
margin-right: 0.6rem; | |
padding: 0.5rem 1rem; | |
} | |
</style> | |
</head> | |
<body> | |
<div id="app_container"></div> | |
<!-- Cargar React. --> | |
<!-- Nota: cuando se despliegue, reemplazar "development.js" con "production.min.js". --> | |
<script | |
src="https://unpkg.com/react@18/umd/react.development.js" | |
crossorigin | |
></script> | |
<script | |
src="https://unpkg.com/react-dom@18/umd/react-dom.development.js" | |
crossorigin | |
></script> | |
<script src="https://unpkg.com/babel-standalone@6/babel.min.js"></script> | |
<script type="text/babel"> | |
class TabStrip extends React.Component { | |
render() { | |
return ( | |
<div className="TabStrip"> | |
{this.props.titles.map((title, index) => { | |
const className = | |
"TabStrip-title" + | |
(this.isActive(index) ? " TabStrip-title-active" : ""); | |
return ( | |
<div | |
onClick={() => this.setActiveIndex(index)} | |
key={index} | |
className={className} | |
> | |
{title} | |
</div> | |
); | |
})} | |
</div> | |
); | |
} | |
isActive(index) { | |
return index === this.getActiveIndex(); | |
} | |
setActiveIndex(activeIndex) { | |
this.props.onActiveIndexChange(activeIndex); | |
} | |
getActiveIndex() { | |
return this.props.activeIndex; | |
} | |
} | |
class App extends React.Component { | |
state = { activeIndex: 1 }; | |
onActiveIndexChange = (activeIndex) => { | |
this.setState({activeIndex: activeIndex}); | |
} | |
render() { | |
return ( | |
<div> | |
<TabStrip | |
activeIndex={this.state.activeIndex} | |
onActiveIndexChange={this.onActiveIndexChange} | |
titles={["My account", "Settings", "Dashboard"]} | |
/> | |
</div> | |
); | |
} | |
} | |
const domContainer = document.querySelector("#app_container"); | |
const root = ReactDOM.createRoot(domContainer); | |
root.render(<App />); | |
</script> | |
</body> | |
</html> |
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