render () {
<input type="number" value={this.props.value} />
}
for example, when the original value is '.98', we need format it to '0.98'. but it is not take effect。
class Test extends React.Component {
state = {
value: '.98',
}
changeValue = () => {
alert(0.98);
this.setState({
value: '0.98',
});
}
render() {
return <div>
<input type="number" value={this.state.value} />
<button onClick={this.changeValue}>changeValue</button>
</div>;
}
}
ReactDOM.render(<Test />, mountNode);
for example, when the original value is '.98', we need format it to '0.98'. but it is not take effect。