this code below, when I input text in input, the onChange function on will run.
Why the onChange on div can run? Where can I find the docs about this?
class App extends Component {
render() {
return (
<div className="App">
<GiantInput onChange={(e) => console.log('giant onChange', e.target)}/>
<div onChange={(e) => {
console.log('change!', e);
}}>
输入2:<input style={{width: '50%', 'border-color': 'black'}}/>
</div>
</div>
);
}
}
I meet this problem when I use {...others} = props, the "onChange" function be contained in the others, and put on a div, it make the component call the onChange twice, and I spend lots of time to find why.
This is not about React.js . It is called Event Bubbling .
Use e.stopPropagation()
to stop event bubbling.
In your code
<div onChange={e =>console.log('change!', e)}>
输入2: <input onChange={e => e.stopPropagation()}
style={{width: '50%', 'border-color': 'black'}}/>
</div>
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