tooltip

Configures tooltips - small pop-up rectangles that display information about a data-visualizing widget element being pressed or hovered over with the mouse pointer.

Type:

Object

arrowLength

Specifies the length of a tooltip's arrow in pixels.

Type:

Number

Default Value: 10

border

Configures a tooltip's border.

Type:

Object

color

Colors all tooltips.

Type:

String

Default Value: '#ffffff'

This option supports the following colors:

This option sets one color for all tooltips. You can specify a particular tooltip's color in the tooltip.customizeTooltip function.

container

Specifies the container in which to draw tooltips. The default container is the HTML DOM <body> element.

Type:

String

|

DOM Node

|

jQuery

Default Value: undefined

contentTemplate

Specifies a custom template for a tooltip.

Type:

template

Function parameters:
info:

Object

Information on the funnel item being pressed or hovered over.

Object structure:
Name Type Description
item

Funnel Item

The Item object.

percent

Number

The item's percentage value.

percentText

String

The item's formatted percentage value converted to a string.

value

Number

The raw item value.

valueText

String

The item's formatted value converted to a string.

element:

Element (jQuery or HTML)

The tooltip's container. It is an HTML Element or a jQuery Element when you use jQuery.

Return Value:

String

|

DOM Node

|

jQuery

One of the following:

  • HTML markup as a string
  • A DOM node
  • A DOM node wrapped in a jQuery element
Default Value: undefined

cornerRadius

Makes all the tooltip's corners rounded.

Type:

Number

Default Value: 0, 4 (Material)

The following table demonstrates how the corner's curvature depends on the cornerRadius value:

cornerRadius Result
cornerRadius: 0 DevExtreme Chart: tooltip with cornerRadius set to 0
cornerRadius: 15 DevExtreme Chart: tooltip with cornerRadius set to 15
cornerRadius: 35 DevExtreme Chart: tooltip with cornerRadius set to 35

customizeTooltip

Customizes a specific tooltip's appearance.

Type:

Function

Function parameters:
info:

Object

Information on the funnel item being pressed or hovered over with the mouse pointer.

Object structure:
Name Type Description
item

Funnel Item

The Item object.

percent

Number

The item's percentage value.

percentText

String

The item's formatted percentage value converted to a string.

value

Number

The raw item value.

valueText

String

The item's formatted value converted to a string.

Return Value:

Object

The tooltip's text or markup and appearance settings.

Default Value: undefined

This option should be assigned a function that returns an object with the following fields:

Field name Description
text The tooltip's text.
html The HTML markup displayed in a tooltip. To use external resources (for example, images) in the markup, specify the size of the area they occupy beforehand.
color The tooltip's color.
fontColor The color of the tooltip's text.
borderColor The color of the tooltip's border.

enabled

Enables tooltips.

Type:

Boolean

Default Value: false

font

Specifies tooltips' font options.

Type:

Object

format

Formats a value before it is displayed it in a tooltip.

Type:

Format

Default Value: undefined

See the format section for details on accepted values.

See Also

opacity

Specifies tooltips' transparency.

Type:

Number

Default Value: undefined

This option accepts a value from 0 to 1, where 0 makes tooltips completely transparent, and 1 makes them opaque.

paddingLeftRight

Generates an empty space, measured in pixels, between a tooltip's left/right border and its text.

Type:

Number

Default Value: 18

DevExtreme HTML5 JavaScript Funnel Tooltips Left-Right Padding

paddingTopBottom

Generates an empty space, measured in pixels, between a tooltip's top/bottom border and its text.

Type:

Number

Default Value: 15

DevExtreme HTML5 JavaScript Funnel Tooltips Top-Bottom Padding

shadow

Configures a tooltip's shadow.

Type:

Object

zIndex

Specifies a tooltip's z-index.

Type:

Number

Default Value: undefined

If the widget's container has the CSS z-index property specified, and tooltips are displayed incorrectly, configure their z-index using this option.