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Labels in JavaScript Range Navigator control

20 Sep 2021 / 3 minutes to read

Multilevel labels

The labelIntersectAction property is used to avoid overlapping of labels. The following code sample shows the setting of labelIntersectAction property to Hide.

Source
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index.ts
index.html
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import { RangeNavigator, DateTime, RangeTooltip } from '@syncfusion/ej2-charts';
RangeNavigator.Inject( DateTime, RangeTooltip);

let data: object[] = [];
let value: number = 0; let point: object = {};
for (let j: number = 1; j < 1090; j++) {
    value += (Math.random() * 10 - 5);
    value = value < 0 ? Math.abs(value) : value;
    point = { x: new Date(2000, 0, j), y: value, z: value + 10 };
    data.push(point);
}
let range: RangeNavigator = new RangeNavigator(
        {
            labelPosition: 'Outside',
            tooltip: { enable: true },
            valueType: 'DateTime',
            intervalType: 'Quarter',
            enableGrouping: true,
            value: [new Date(2001, 0), new Date(2002, 0)],
            dataSource: data,
            xName: 'x',
            yName: 'y'
        }, '#element');
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<!DOCTYPE html>
<html lang="en">

<head>
    <title>EJ2 Animation</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Typescript UI Controls" />
    <meta name="author" content="Syncfusion" />
    <link href="index.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <script src="systemjs.config.js"></script>
</head>

<body>
    <div id='loader'>Loading....</div>
    <div id='container' style="margin-top: 125px">
        <div id='element'></div>
    </div>
</body>

</html>

Grouping

The second level axis labels can be grouped using “groupBy” property with the following interval types:

  • Auto
  • Years
  • Quarter
  • Months
  • Weeks
  • Days
  • Hours
  • Minutes
  • Seconds
Source
Preview
index.ts
index.html
Copied to clipboard
import { RangeNavigator, DateTime, RangeTooltip } from '@syncfusion/ej2-charts';
RangeNavigator.Inject( DateTime, RangeTooltip);

let data: object[] = [];
let value: number = 0; let point: object = {};
for (let j: number = 1; j < 1090; j++) {
value += (Math.random() * 10 - 5);
value = value < 0 ? Math.abs(value) : value;
point = { x: new Date(2000, 0, j), y: value, z: value + 10 };
data.push(point);
}
let range: RangeNavigator = new RangeNavigator(
    {
        labelPosition: 'Outside',
        tooltip: { enable: true },
        valueType: 'DateTime',
        intervalType: 'Quarter',
        enableGrouping: true,
        groupBy: 'Years',
        value: [new Date(2001, 0), new Date(2002, 0)],
        dataSource: data,
        xName: 'x',
        yName: 'y'
    }, '#element');
Copied to clipboard
<!DOCTYPE html>
<html lang="en">

<head>
    <title>EJ2 Animation</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Typescript UI Controls" />
    <meta name="author" content="Syncfusion" />
    <link href="index.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <script src="systemjs.config.js"></script>
</head>

<body>
    <div id='loader'>Loading....</div>
    <div id='container' style="margin-top: 125px">
        <div id='element'></div>
    </div>
</body>

</html>

Smart labels

The labelIntersectAction property is used to avoid overlapping of labels. The following code sample shows the setting of labelIntersectAction property to Hide.

Source
Preview
index.ts
index.html
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import { RangeNavigator, StepLineSeries, DateTime}  from "@syncfusion/ej2-charts";
RangeNavigator.Inject(StepLineSeries, DateTime);
import { datasrc } from "./datasource.ts";

let range: RangeNavigator = new RangeNavigator({
valueType: 'DateTime',
labelIntersectAction: 'Hide',
labelFormat:'y/M/d',
value:[new Date("2017-08-13"), new Date("2017-12-28")],
series: [{
            dataSource: datasrc, xName: 'x', yName: 'y', type: 'StepLine', width: 2,
        }],
}, '#element');
Copied to clipboard
<!DOCTYPE html>
<html lang="en">

<head>
    <title>EJ2 Animation</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Typescript UI Controls" />
    <meta name="author" content="Syncfusion" />
    <link href="index.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <script src="systemjs.config.js"></script>
</head>

<body>
    <div id='loader'>Loading....</div>
    <div id='container' style="margin-top: 125px">
        <div id='element'></div>
    </div>
</body>

</html>

Label positioning

By default, the labels can be placed outside the Range Selector. It can also be placed inside the Range Selector using the labelPosition property.

Source
Preview
index.ts
index.html
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import { RangeNavigator, StepLineSeries, DateTime}  from "@syncfusion/ej2-charts";
RangeNavigator.Inject(StepLineSeries, DateTime);
import { datasrc } from "./datasource.ts";

let range: RangeNavigator = new RangeNavigator({
valueType: 'DateTime',
labelPosition: 'Inside',
value:[new Date("2017-08-13"), new Date("2017-12-28")],
series: [{
            dataSource: datasrc, xName: 'x', yName: 'y', type: 'StepLine', width: 2,
        }],
}, '#element');
Copied to clipboard
<!DOCTYPE html>
<html lang="en">

<head>
    <title>EJ2 Animation</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Typescript UI Controls" />
    <meta name="author" content="Syncfusion" />
    <link href="index.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <script src="systemjs.config.js"></script>
</head>

<body>
    <div id='loader'>Loading....</div>
    <div id='container' style="margin-top: 125px">
        <div id='element'></div>
    </div>
</body>

</html>

Labels customization

The font size, color, family, etc. can be customized using the labelStyle setting.

Source
Preview
index.ts
index.html
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import { RangeNavigator, DateTime } from '@syncfusion/ej2-charts';
import { GetDateTimeData } from './datasource.ts';
RangeNavigator.Inject(DateTime);

let range: RangeNavigator = new RangeNavigator(
    {
        valueType: 'DateTime',
        intervalType: 'Months',
        labelFormat: 'MMM',
        labelStyle: { color: 'red', size:'10px'}
        value: [new Date(2018, 5, 1), new Date(2018, 6, 1)],
        dataSource: GetDateTimeData(new Date(2018, 0, 1), new Date(2019, 0, 1)),
        xName: 'x', yName: 'y'
    }, '#element');
Copied to clipboard
<!DOCTYPE html>
<html lang="en">

<head>
    <title>EJ2 Animation</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Typescript UI Controls" />
    <meta name="author" content="Syncfusion" />
    <link href="index.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <script src="systemjs.config.js"></script>
</head>

<body>
    <div id='loader'>Loading....</div>
    <div id='container' style="margin-top: 125px">
        <div id='element'></div>
    </div>
</body>

</html>