/Javascript/React/React set state before render

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>
    );
}

Source: stackoverflow.com

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