JSFiddle - React, Tailwind, and code Playground

HTML

<div id="test">

</div>

JavaScript

var data = {
    datasets: [{
        data: [
            33,
            9,
            24,
				],
        backgroundColor: [
            "#FF6384",
            "#4BC0C0",
            "#FFCE56",
				],
        label: 'My dataset' // for legend
    }],
    labels: [
        "Overdue",
        "Today",
        "Upcoming",
		]
};

document.write(data.datasets[0].data[0]);
data.datasets[0].data[0] = 50;
document.write(data.datasets[0].data[0]);