React ES6组件不会重新发送

Question

I have the following code. Please notice the two console.log s. I am calling the _getChartData() function from within another child of the <ChartTitle> component.

The issue is that when _getChartData() is called a second time, it doesn't re-re-render the child components of the code below. I am expecting it to do so because of the setState in there.

export default class PerformanceChart extends React.Component {

    constructor(props) {
        super(props);
        this.state = { chart_data: [] };
        this._getChartData();
    }

    componentDidMount() {
        this._getChartData();
    }

    _getChartData(d = 30) {

        console.log('running setState for chart data');

        // AJAX GOES HERE
        this.setState = ({
            chart_data : [ 
                ['x', '2016-01-01', '2016-03-01', '2016-04-01', '2016-05-01', '2016-06-01', '2016-07-01', '2016-08-01'],
                ['Clicks', Math.random(), 200, 100, 400, 150, 250, 125, 600],
                ['Orders Reported', 300, 250, 100, 400, 150, 250, 40, 300],
                ['totals', [1050, 5042]]
            ]
        });

    };

    render() {

        console.log('re-rendering!');

        return (

            <div>
                <ChartTitle chart_data={this.state.chart_data} getChartData={this._getChartData.bind(this)} />
                <Chart chart_data={this.state.chart_data} />
            </div>

        );
    }

};

This is what I get in my console:

Answer 1

I think this is your problem

this.setState = ({

setState is a function, you need to call it not assign it, ie:

this.setState({
    chart_data : [ 
        ['x', '2016-01-01', '2016-03-01', '2016-04-01', '2016-05-01', '2016-06-01', '2016-07-01', '2016-08-01'],
        ['Clicks', Math.random(), 200, 100, 400, 150, 250, 125, 600],
        ['Orders Reported', 300, 250, 100, 400, 150, 250, 40, 300],
        ['totals', [1050, 5042]]
    ]
});