component did update arguments
componentDidUpdate(prevProps, prevState) {
// only update chart if the data has changed
if (prevProps.data !== this.props.data) {
this.chart = c3.load({
data: this.props.data
});
}
}component did update arguments
componentDidUpdate(prevProps, prevState) {
// only update chart if the data has changed
if (prevProps.data !== this.props.data) {
this.chart = c3.load({
data: this.props.data
});
}
}react set state before render
componentDidMount() {
this.setState({
thing: [
{
status: "running",
test: "testing"
}
]
});
}
render() {
return (
<div>
{this.state.thing.length > 0? <h1 className="mt-5 mb-5">{ this.state.thing[0].status }</h1>: null
}
<button className="mt-5" onClick={ this.handleUpdate } value="not running">
Click to change
</button>
</div>
);
}Copyright © 2021 Codeinu
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