Ниже приведенный фрагмент кода демонстрирует, как это можно сделать.
let dates = [];
let confirmed = [];
let recovered = [];
let deaths = [];
fetch("https://pomber.github.io/covid19/timeseries.json")
.then(response => response.json())
.then(data=> {
data["South Africa"].forEach(o => {
dates.push(o.date);
confirmed.push(o.confirmed);
recovered.push(o.recovered);
deaths.push(o.deaths);
})
new Chart(document.getElementById('myChart'), {
type: 'line',
data: {
labels: dates,
datasets: [{
label: 'Confirmed',
borderColor: 'orange',
backgroundColor: 'orange',
fill: 'false',
data: confirmed
},
{
label: 'Recovered',
borderColor: 'green',
backgroundColor: 'green',
fill: 'false',
data: recovered
},
{
label: 'Deaths',
borderColor: 'red',
backgroundColor: 'red',
fill: 'false',
data: deaths
}
]
},
options: {
responsive: true,
title: {
display: true,
text: 'Covid-19 / South Africa'
}
}
});
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.9.3/Chart.min.js"></script>
<canvas id="myChart" height="100"></canvas>