Reagovať natívny životný cyklus
Príklady kódu
metódy životného cyklu reagujú
Every component in React goes through a lifecycle of events. I like to think of them as going through a cycle of birth, growth, and death.
Mounting – Birth of your component
Update – Growth of your component
Unmount – Death of your componentnastaviť stav
class App extends React.Component {
state = { count: 0 }
handleIncrement = () => {
this.setState({ count: this.state.count + 1 })
}
handleDecrement = () => {
this.setState({ count: this.state.count - 1 })
}
render() {
return (
<div>
<div>
{this.state.count}
</div>
<button onClick={this.handleIncrement}>Increment by 1</button>
<button onClick={this.handleDecrement}>Decrement by 1</button>
</div>
)
}
}Podobné stránky
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