1👍
✅
There are several problems in your data and in your code:
- The provided data is not of valid JSON format (lots of commas missing)
- The
data
option inside individualdatasets
is not correctly created- It must not be a nested array but a simple array
- The
Date
must not be converted tostring
as you currently do usingdateTickFormatting
Please also note that
moment.js
needs to be imported if you’re not using a bundled build of Chart.js.
The following runnable code snippet illustrates how it can be done.
const data = [{
name: "series1",
series: [{
date: "2016-01-31T00:00:00.000Z",
value: 49
},
{
date: "2016-02-28T00:00:00.000Z",
value: 49
},
{
date: "2016-03-30T00:00:00.000Z",
value: 44
},
{
date: "2016-04-31T00:00:00.000Z",
value: 57
}
]
}, {
name: "series2",
series: [{
date: "2016-01-31T00:00:00.000Z",
value: 12
},
{
date: "2016-02-28T00:00:00.000Z",
value: 32
},
{
date: "2016-03-30T00:00:00.000Z",
value: 28
},
{
date: "2016-04-31T00:00:00.000Z",
value: 48
}
]
}];
new Chart(document.getElementById('myChart'), {
type: 'line',
data: {
datasets: [
{
label: data[0].name,
fill: false,
backgroundColor: 'red',
borderColor: 'red',
data: data[0].series.map(x => ({ x: new Date(x.date), y: x.value }))
}, {
label: data[1].name,
fill: false,
backgroundColor: 'blue',
borderColor: 'blue',
data: data[1].series.map(x => ({ x: new Date(x.date), y: x.value }))
}
]
},
options: {
responsive: true,
title: {
display: true,
text: 'My Chart',
fontSize: 18
},
legend: {
display: true,
position: 'top'
},
scales: {
xAxes: [{
type: 'time',
time: {
unit: 'month',
displayFormats: {
'month': 'MMM YYYY',
},
tooltipFormat: 'MMM YYYY'
}
}],
}
}
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.22.0/moment.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.9.3/Chart.min.js"></script>
<canvas id="myChart" height="100"></canvas>
Source:stackexchange.com