JavaScript/jQuery Chart - Legend

Specifies the properties of a chart's legend.

import { Legend } from "devextreme/viz/chart"
Type: BaseChartLegend |

Object

backgroundColor

Colors the legend's background.

Type:

String

| undefined
Default Value: undefined

This property supports the following colors:

border

Configures the legend's border.

Type:

Object

columnCount

Arranges legend items into several columns.

Type:

Number

Default Value: 0

Use this property when the legend is oriented vertically. Otherwise, use rowCount.

NOTE
If you specify this property and, as a result, legend items do not fit into the available space, this property is ignored.
See Also

columnItemSpacing

Specifies an empty space between item columns in pixels.

Type:

Number

Default Value: 20

customizeHint

Specifies the text for a hint that appears when a user hovers the mouse pointer over a legend item.

Type:

Function

Function parameters:
seriesInfo:

Object

Information on the series.

Object structure:
Name Type Description
seriesColor

String

The series' color.
seriesIndex

Number

The index of the series in the series array. To get the Series object by this index, call the getSeriesByPos(seriesIndex) method.
seriesName any

The series' name. To get the Series object by this name, call the getSeriesByName(seriesName) method.
Return Value:

String

The text for the hint to display.

customizeItems

Allows you to change the order, text, and visibility of legend items.

Type:

Function

Function parameters:
items:

Array<LegendItem>

Legend items before customizations.

Return Value:

Array<LegendItem>

Legend items after customizations.

customizeText

Specifies a callback function that returns the text to be displayed by a legend item.

Type:

Function

Function parameters:
seriesInfo:

Object

Information on the series.

Object structure:
Name Type Description
seriesColor

String

The series' color.
seriesIndex

Number

The series' index.
seriesName any

The series' name.
Return Value:

String

The text for the legend item to display.

Cannot be used in themes.

font

Specifies the legend items' font properties.

Type:

Object

horizontalAlignment

Along with verticalAlignment, specifies the legend's position.

Type:

HorizontalAlignment

Default Value: 'right'

See Also

hoverMode

Specifies what series elements to highlight when a corresponding item in the legend is hovered over.

Type:

LegendHoverMode

Default Value: 'includePoints'

itemsAlignment

Aligns items in the last column or row (depending on the legend's orientation). Applies when legend items are not divided into columns or rows equally.

Type:

HorizontalAlignment

| undefined
Default Value: undefined

itemTextPosition

Specifies the text's position relative to the marker in a legend item.

Type:

Position

| undefined
Default Value: undefined

margin

Generates an empty space, measured in pixels, around the legend.

Type:

Number

|

Object

Default Value: 10

When set to a number, this property applies to all the legend's sides. The object allows you to control each side individually.

DevExtreme Legend Margins

markerSize

Specifies the marker's size in a legend item in pixels.

Type:

Number

Default Value: 20

markerTemplate

Specifies an SVG element that serves as a custom legend item marker.

Type:

template

| undefined
Function parameters:
legendItem:

LegendItem

Information about a legend item.

element:

SVGGElement

A marker's container.

Return Value:

String

|

SVGElement

|

jQuery

One of the following:

  • Template name
  • SVG markup as a string
  • SVGElement
  • jQuery element that contains an SVGElement
Default Value: undefined

orientation

Arranges legend items vertically (in a column) or horizontally (in a row). The default value is "horizontal" if the legend.horizontalAlignment is "center". Otherwise, it is "vertical".

Type:

Orientation

| undefined
Default Value: undefined

See Also

paddingLeftRight

Generates an empty space, measured in pixels, between the legend's left/right border and its items.

Type:

Number

Default Value: 10

DevExtreme Legend Left-Right Padding

paddingTopBottom

Generates an empty space, measured in pixels, between the legend's top/bottom border and its items.

Type:

Number

Default Value: 10

DevExtreme Legend Top-Bottom Padding

position

Specifies whether the legend is located outside or inside the chart's plot.

Type:

RelativePosition

Default Value: 'outside'

rowCount

Arranges legend items in several rows.

Type:

Number

Default Value: 0

Use this property when the legend is oriented horizontally. Otherwise, use columnCount.

NOTE
If you specify this property and, as a result, legend items do not fit into the available space, this property is ignored.
See Also

rowItemSpacing

Specifies an empty space between item rows in pixels.

Type:

Number

Default Value: 8

title

Configures the legend title.

Type:

Object

|

String

DevExtreme PieChart: Legend Title

To specify only the title's text, assign it directly to this property. Otherwise, set this property to an object with the text and other fields specified.

The title can be accompanied by a subtitle. Assign it to the title.subtitle property.

verticalAlignment

Along with horizontalAlignment, specifies the legend's position.

Type:

VerticalEdge

Default Value: 'top'

See Also

visible

Specifies the legend's visibility.

Type:

Boolean

Default Value: true