Backend API
import React from 'react';
import Chart, {
CommonSeriesSettings,
Series,
Reduction,
ArgumentAxis,
Label,
Format,
ValueAxis,
Title,
Legend,
Export,
Tooltip,
} from 'devextreme-react/chart';
import type { ChartTypes } from 'devextreme-react/chart';
import { dataSource } from './data.ts';
const customizeTooltip = (arg: ChartTypes.CandleStickPointInfo | ChartTypes.PointInfo): Record<string, string> => {
if (!('openValue' in arg)) {
return { text: '' };
}
return {
text: `Open: $${arg.openValue}<br/>
Close: $${arg.closeValue}<br/>
High: $${arg.highValue}<br/>
Low: $${arg.lowValue}<br/>`,
};
};
function App() {
return (
<Chart id="chart" title="Stock Price" dataSource={dataSource}>
<CommonSeriesSettings argumentField="date" type="candlestick" />
<Series
name="E-Mart"
openValueField="o"
highValueField="h"
lowValueField="l"
closeValueField="c"
>
<Reduction color="red" />
</Series>
<ArgumentAxis workdaysOnly={true}>
<Label format="shortDate" />
</ArgumentAxis>
<ValueAxis tickInterval={1}>
<Title text="US dollars" />
<Label>
<Format precision={0} type="currency" />
</Label>
</ValueAxis>
<Legend itemTextPosition="left" />
<Export enabled={true} />
<Tooltip
enabled={true}
location="edge"
customizeTooltip={customizeTooltip}
/>
</Chart>
);
}
export default App;
import React from 'react';
import Chart, {
CommonSeriesSettings,
Series,
Reduction,
ArgumentAxis,
Label,
Format,
ValueAxis,
Title,
Legend,
Export,
Tooltip,
} from 'devextreme-react/chart';
import { dataSource } from './data.js';
const customizeTooltip = (arg) => {
if (!('openValue' in arg)) {
return { text: '' };
}
return {
text: `Open: $${arg.openValue}<br/>
Close: $${arg.closeValue}<br/>
High: $${arg.highValue}<br/>
Low: $${arg.lowValue}<br/>`,
};
};
function App() {
return (
<Chart
id="chart"
title="Stock Price"
dataSource={dataSource}
>
<CommonSeriesSettings
argumentField="date"
type="candlestick"
/>
<Series
name="E-Mart"
openValueField="o"
highValueField="h"
lowValueField="l"
closeValueField="c"
>
<Reduction color="red" />
</Series>
<ArgumentAxis workdaysOnly={true}>
<Label format="shortDate" />
</ArgumentAxis>
<ValueAxis tickInterval={1}>
<Title text="US dollars" />
<Label>
<Format
precision={0}
type="currency"
/>
</Label>
</ValueAxis>
<Legend itemTextPosition="left" />
<Export enabled={true} />
<Tooltip
enabled={true}
location="edge"
customizeTooltip={customizeTooltip}
/>
</Chart>
);
}
export default App;
import React from 'react';
import ReactDOM from 'react-dom';
import App from './App.tsx';
ReactDOM.render(
<App />,
document.getElementById('app'),
);
export const dataSource = [{
date: new Date(1994, 2, 1),
l: 24.00,
h: 25.00,
o: 25.00,
c: 24.875,
}, {
date: new Date(1994, 2, 2),
l: 23.625,
h: 25.125,
o: 24.00,
c: 24.875,
}, {
date: new Date(1994, 2, 3),
l: 26.25,
h: 28.25,
o: 26.75,
c: 27.00,
}, {
date: new Date(1994, 2, 4),
l: 26.50,
h: 27.875,
o: 26.875,
c: 27.25,
}, {
date: new Date(1994, 2, 7),
l: 26.375,
h: 27.50,
o: 27.375,
c: 26.75,
}, {
date: new Date(1994, 2, 8),
l: 25.75,
h: 26.875,
o: 26.75,
c: 26.00,
}, {
date: new Date(1994, 2, 9),
l: 25.75,
h: 26.75,
o: 26.125,
c: 26.25,
}, {
date: new Date(1994, 2, 10),
l: 25.75,
h: 26.375,
o: 26.375,
c: 25.875,
}, {
date: new Date(1994, 2, 11),
l: 24.875,
h: 26.125,
o: 26.00,
c: 25.375,
}, {
date: new Date(1994, 2, 14),
l: 25.125,
h: 26.00,
o: 25.625,
c: 25.75,
}, {
date: new Date(1994, 2, 15),
l: 25.875,
h: 26.625,
o: 26.125,
c: 26.375,
}, {
date: new Date(1994, 2, 16),
l: 26.25,
h: 27.375,
o: 26.25,
c: 27.25,
}, {
date: new Date(1994, 2, 17),
l: 26.875,
h: 27.25,
o: 27.125,
c: 26.875,
}, {
date: new Date(1994, 2, 18),
l: 26.375,
h: 27.125,
o: 27.00,
c: 27.125,
}, {
date: new Date(1994, 2, 21),
l: 26.75,
h: 27.875,
o: 26.875,
c: 27.75,
}, {
date: new Date(1994, 2, 22),
l: 26.75,
h: 28.375,
o: 27.50,
c: 27.00,
}, {
date: new Date(1994, 2, 23),
l: 26.875,
h: 28.125,
o: 27.00,
c: 28.00,
}, {
date: new Date(1994, 2, 24),
l: 26.25,
h: 27.875,
o: 27.75,
c: 27.625,
}, {
date: new Date(1994, 2, 25),
l: 27.50,
h: 28.75,
o: 27.75,
c: 28.00,
}, {
date: new Date(1994, 2, 28),
l: 25.75,
h: 28.25,
o: 28.00,
c: 27.25,
}, {
date: new Date(1994, 2, 29),
l: 26.375,
h: 27.50,
o: 27.50,
c: 26.875,
}, {
date: new Date(1994, 2, 30),
l: 25.75,
h: 27.50,
o: 26.375,
c: 26.25,
}, {
date: new Date(1994, 2, 31),
l: 24.75,
h: 27.00,
o: 26.50,
c: 25.25,
}];
import React from 'react';
import ReactDOM from 'react-dom';
import App from './App.js';
ReactDOM.render(<App />, document.getElementById('app'));
export const dataSource = [
{
date: new Date(1994, 2, 1),
l: 24.0,
h: 25.0,
o: 25.0,
c: 24.875,
},
{
date: new Date(1994, 2, 2),
l: 23.625,
h: 25.125,
o: 24.0,
c: 24.875,
},
{
date: new Date(1994, 2, 3),
l: 26.25,
h: 28.25,
o: 26.75,
c: 27.0,
},
{
date: new Date(1994, 2, 4),
l: 26.5,
h: 27.875,
o: 26.875,
c: 27.25,
},
{
date: new Date(1994, 2, 7),
l: 26.375,
h: 27.5,
o: 27.375,
c: 26.75,
},
{
date: new Date(1994, 2, 8),
l: 25.75,
h: 26.875,
o: 26.75,
c: 26.0,
},
{
date: new Date(1994, 2, 9),
l: 25.75,
h: 26.75,
o: 26.125,
c: 26.25,
},
{
date: new Date(1994, 2, 10),
l: 25.75,
h: 26.375,
o: 26.375,
c: 25.875,
},
{
date: new Date(1994, 2, 11),
l: 24.875,
h: 26.125,
o: 26.0,
c: 25.375,
},
{
date: new Date(1994, 2, 14),
l: 25.125,
h: 26.0,
o: 25.625,
c: 25.75,
},
{
date: new Date(1994, 2, 15),
l: 25.875,
h: 26.625,
o: 26.125,
c: 26.375,
},
{
date: new Date(1994, 2, 16),
l: 26.25,
h: 27.375,
o: 26.25,
c: 27.25,
},
{
date: new Date(1994, 2, 17),
l: 26.875,
h: 27.25,
o: 27.125,
c: 26.875,
},
{
date: new Date(1994, 2, 18),
l: 26.375,
h: 27.125,
o: 27.0,
c: 27.125,
},
{
date: new Date(1994, 2, 21),
l: 26.75,
h: 27.875,
o: 26.875,
c: 27.75,
},
{
date: new Date(1994, 2, 22),
l: 26.75,
h: 28.375,
o: 27.5,
c: 27.0,
},
{
date: new Date(1994, 2, 23),
l: 26.875,
h: 28.125,
o: 27.0,
c: 28.0,
},
{
date: new Date(1994, 2, 24),
l: 26.25,
h: 27.875,
o: 27.75,
c: 27.625,
},
{
date: new Date(1994, 2, 25),
l: 27.5,
h: 28.75,
o: 27.75,
c: 28.0,
},
{
date: new Date(1994, 2, 28),
l: 25.75,
h: 28.25,
o: 28.0,
c: 27.25,
},
{
date: new Date(1994, 2, 29),
l: 26.375,
h: 27.5,
o: 27.5,
c: 26.875,
},
{
date: new Date(1994, 2, 30),
l: 25.75,
h: 27.5,
o: 26.375,
c: 26.25,
},
{
date: new Date(1994, 2, 31),
l: 24.75,
h: 27.0,
o: 26.5,
c: 25.25,
},
];
<!DOCTYPE html>
<html lang="en">
<head>
<title>DevExtreme Demo</title>
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=5.0" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/26.1.5/css/dx.light.css" />
<link rel="stylesheet" type="text/css" href="./bundle.css" />
</head>
<body class="dx-viewport">
<div class="demo-container">
<div id="app"></div>
</div>
<script src="bundles/vendor/react.vendor.js"></script>
<script src="./bundle.js"></script>
</body>
</html>
#chart {
height: 440px;
}
In Candlestick series, each point consists of a rectangle (body) and a vertical line (shadow, wick, or tail). The top and bottom values of a vertical line correspond to the highest and lowest prices of the stock, respectively. Use the highValueField and lowValueField properties to specify data source fields for these prices.
The bottom and topmost values of the point's body correspond to the opening and closing price of a stock. To specify these prices, use the openValueField and closeValueField properties. If the stock closes higher than its opening price, no color fills the body; if the stock closes lower than its opening price, the Chart applies a color fill to the body.
To reflect changes on the market, the Chart component compares the price of every point with the price of the previous point. The Chart paints the points whose price has decreased in a specific reduction color. To change color of other points, use the series.color property; you can also specify the series.innerColor property to fill these points' bodies with color. To switch between high, low, open, or close prices of points as sources for data comparison, use the series.reduction.level property.
Apply the following settings to make your chart more user-friendly:
- tooltip.contentTemplate - specifies a custom tooltip template so you can display additional information, such as price values.
- argumentAxis.workdaysOnly - displays only work days on the argument axis.