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S06: Add chart with advanced annotations #15

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S06: Add chart with advanced annotations #15

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2f9c640
S06: Add chart with advanced annotations
dqmrf Jul 2, 2026
e2e8486
S06: Minor code improvements
dqmrf Jul 2, 2026
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17 changes: 12 additions & 5 deletions highcharts-api/highcharts-stock/06-advanced-annotations/index.html
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Original file line number Diff line number Diff line change
Expand Up @@ -2,16 +2,23 @@

<head>

<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<meta name="viewport" content="width=device-width, initial-scale=1">
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<meta name="viewport" content="width=device-width, initial-scale=1">

<script src="https://code.highcharts.com/stock/highstock.js"></script>
<link rel="stylesheet" type="text/css" href="https://code.highcharts.com/css/annotations/popup.css">

<script src="https://code.highcharts.com/stock/highstock.js"></script>
<script src="https://code.highcharts.com/modules/annotations-advanced.js"></script>
<script src="https://code.highcharts.com/modules/accessibility.js"></script>

</head>

<body>
<div id="container"></div>
<div id="container"></div>
<div id="controls">
<button type="button" id="add-annotation">Add annotation</button>
</div>
</body>

<script src="main.js"></script>
73 changes: 55 additions & 18 deletions highcharts-api/highcharts-stock/06-advanced-annotations/main.js
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Original file line number Diff line number Diff line change
@@ -1,22 +1,59 @@
(async () => {
const data = await fetch(
'https://demo-live-data.highcharts.com/aapl-c.json'
).then(response => response.json());
const data = await fetch(
'https://demo-live-data.highcharts.com/aapl-c.json'
).then(response => response.json());

const chart = Highcharts.stockChart('container', {
series: [{
data: data
}],
const chart = Highcharts.stockChart('container', {

@jedrzejruta jedrzejruta Jul 2, 2026

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Nitpicking here, but you can safely remove the const assignment, since the variable isn't used anywhere later on.

chart: {
events: {
load() {
const chart = this;
const addBtn = document.getElementById('add-annotation');

annotations: [{
shapes: [{
x: data[10][0],
y: data[10][1],
type: 'rect',
width: 40,
height: 40,
fill: 'red'
}],
}]
});
addBtn.addEventListener('click', function() {
const x = chart.xAxis[0].toValue(chart.plotLeft + 10),
y = chart.yAxis[0].toValue(chart.plotTop + 10);

chart.addAnnotation({
shapes: [{
type: 'rect',
point: {
xAxis: 0,
yAxis: 0,
x,
y
},
width: 360,
height: 60,
fill: 'red'
}],
labels: [{
point: {
xAxis: 0,
yAxis: 0,
x,
y
},
x: 180,
y: 30,
shape: 'rect',
text: Math.trunc(y),
verticalAlign: 'middle'
}],
events: {
drag: function() {
const label = this.labels[0];
const rectY = this.shapes[0].points[0].y;
label.update({ text: Math.trunc(rectY) });
}
}
});
});
}
}
},
series: [{
data: data
}]
});
})();