# Interface: Defaults
# Hierarchy
# Properties
# animation
• animation: false | AnimationSpec<keyof ChartTypeRegistry> & { onComplete?: (this: Chart<keyof ChartTypeRegistry, (number | [number, number] | Point | BubbleDataPoint)[], unknown>, event: AnimationEvent) => void ; onProgress?: (this: Chart<keyof ChartTypeRegistry, (number | [number, number] | Point | BubbleDataPoint)[], unknown>, event: AnimationEvent) => void }
# Inherited from
# Defined in
types/index.d.ts:1747 (opens new window)
# animations
• animations: AnimationsSpec<keyof ChartTypeRegistry>
# Inherited from
# Defined in
types/index.d.ts:1757 (opens new window)
# aspectRatio
• aspectRatio: number
Canvas aspect ratio (i.e. width / height, a value of 1 representing a square canvas). Note that this option is ignored if the height is explicitly defined either as attribute or via the style.
Default
2
# Inherited from
# Defined in
types/index.d.ts:1645 (opens new window)
# backgroundColor
• backgroundColor: Scriptable<Color, ScriptableContext<keyof ChartTypeRegistry>>
base background color
See
Defaults.backgroundColor
# Inherited from
CoreChartOptions.backgroundColor
# Defined in
types/index.d.ts:1614 (opens new window)
# borderColor
• borderColor: Scriptable<Color, ScriptableContext<keyof ChartTypeRegistry>>
base border color
See
Defaults.borderColor
# Inherited from
# Defined in
types/index.d.ts:1619 (opens new window)
# clip
• clip: number | false | ChartArea
How to clip relative to chartArea. Positive value allows overflow, negative value clips that many pixels inside chartArea. 0 = clip at chartArea. Clipping can also be configured per side: clip: {left: 5, top: false, right: -2, bottom: 0}
# Inherited from
# Defined in
types/index.d.ts:1603 (opens new window)
# color
• color: Scriptable<Color, ScriptableContext<keyof ChartTypeRegistry>>
base color
See
Defaults.color
# Inherited from
# Defined in
types/index.d.ts:1609 (opens new window)
# datasets
• datasets: Object
# Type declaration
| Name | Type |
|---|---|
bar | BarControllerDatasetOptions |
bubble | BubbleControllerDatasetOptions |
doughnut | DoughnutControllerDatasetOptions |
line | LineControllerDatasetOptions & FillerControllerDatasetOptions |
pie | DoughnutControllerDatasetOptions |
polarArea | PolarAreaControllerDatasetOptions |
radar | RadarControllerDatasetOptions & FillerControllerDatasetOptions |
scatter | LineControllerDatasetOptions |
# Inherited from
# Defined in
types/index.d.ts:1590 (opens new window)
# devicePixelRatio
• devicePixelRatio: number
Override the window's default devicePixelRatio.
Default
window.devicePixelRatio
# Inherited from
CoreChartOptions.devicePixelRatio
# Defined in
types/index.d.ts:1662 (opens new window)
# elements
• elements: ElementOptionsByType<keyof ChartTypeRegistry>
# Inherited from
ElementChartOptions.elements
# Defined in
types/index.d.ts:2137 (opens new window)
# events
• events: keyof HTMLElementEventMap[]
The events option defines the browser events that the chart should listen to for tooltips and hovering.
Default
['mousemove', 'mouseout', 'click', 'touchstart', 'touchmove']
# Inherited from
# Defined in
types/index.d.ts:1672 (opens new window)
# font
• font: Partial<FontSpec>
base font
See
Defaults.font
# Inherited from
# Defined in
types/index.d.ts:1624 (opens new window)
# hover
• hover: CoreInteractionOptions
# Inherited from
# Defined in
types/index.d.ts:1666 (opens new window)
# indexAxis
• indexAxis: "x" | "y"
The base axis of the chart. 'x' for vertical charts and 'y' for horizontal charts.
Default
'x'
# Inherited from
# Defined in
types/index.d.ts:1598 (opens new window)
# interaction
• interaction: CoreInteractionOptions
# Inherited from
# Defined in
types/index.d.ts:1664 (opens new window)
# layout
• layout: Partial<{ autoPadding: boolean ; padding: Scriptable<Padding, ScriptableContext<keyof ChartTypeRegistry>> }>
# Inherited from
# Defined in
types/index.d.ts:1684 (opens new window)
# locale
• locale: string
Locale used for number formatting (using Intl.NumberFormat).
Default
user's browser setting
# Inherited from
# Defined in
types/index.d.ts:1651 (opens new window)
# maintainAspectRatio
• maintainAspectRatio: boolean
Maintain the original canvas aspect ratio (width / height) when resizing. For this option to work properly the chart must be in its own dedicated container.
Default
true
# Inherited from
CoreChartOptions.maintainAspectRatio
# Defined in
types/index.d.ts:1634 (opens new window)
# normalized
• normalized: boolean
Chart.js is fastest if you provide data with indices that are unique, sorted, and consistent across datasets and provide the normalized: true option to let Chart.js know that you have done so.
# Inherited from
# Defined in
types/index.d.ts:63 (opens new window)
# parsing
• parsing: false | { [key: string]: string; }
How to parse the dataset. The parsing can be disabled by specifying parsing: false at chart options or dataset. If parsing is disabled, data must be sorted and in the formats the associated chart type and scales use internally.
# Inherited from
# Defined in
types/index.d.ts:54 (opens new window)
# plugins
• plugins: PluginOptionsByType<keyof ChartTypeRegistry>
# Inherited from
# Defined in
types/index.d.ts:2950 (opens new window)
# resizeDelay
• resizeDelay: number
Delay the resize update by give amount of milliseconds. This can ease the resize process by debouncing update of the elements.
Default
0
# Inherited from
# Defined in
types/index.d.ts:1639 (opens new window)
# responsive
• responsive: boolean
Resizes the chart canvas when its container does (important note...).
Default
true
# Inherited from
# Defined in
types/index.d.ts:1629 (opens new window)
# scale
• scale: ScaleOptionsByType<keyof ScaleTypeRegistry>
# Defined in
types/index.d.ts:668 (opens new window)
# scales
• scales: Object
# Type declaration
| Name | Type |
|---|---|
category | { type: "category" } & Omit<CartesianScaleOptions, "max" | "min"> & { labels: string[] | string[][] ; max: string | number ; min: string | number } |
linear | { type: "linear" } & CartesianScaleOptions & { beginAtZero: boolean ; grace?: string | number ; suggestedMax?: number ; suggestedMin?: number ; ticks: { count: number ; format: NumberFormatOptions ; precision: number ; stepSize: number } } |
logarithmic | { type: "logarithmic" } & CartesianScaleOptions & { suggestedMax?: number ; suggestedMin?: number ; ticks: { format: NumberFormatOptions } } |
radialLinear | { type: "radialLinear" } & CoreScaleOptions & { angleLines: { borderDash: Scriptable<number[], ScriptableScaleContext> ; borderDashOffset: Scriptable<number, ScriptableScaleContext> ; color: Scriptable<Color, ScriptableScaleContext> ; display: boolean ; lineWidth: Scriptable<number, ScriptableScaleContext> } ; animate: boolean ; beginAtZero: boolean ; grid: Partial<GridLineOptions> ; max: number ; min: number ; pointLabels: { backdropColor: Scriptable<Color, ScriptableScalePointLabelContext> ; backdropPadding: Scriptable<number | ChartArea, ScriptableScalePointLabelContext> ; borderRadius: Scriptable<number | BorderRadius, ScriptableScalePointLabelContext> ; callback: (label: string, index: number) => string | number | string[] | number[] ; centerPointLabels: boolean ; color: Scriptable<Color, ScriptableScalePointLabelContext> ; display: boolean | "auto" ; font: ScriptableAndScriptableOptions<Partial<FontSpec>, ScriptableScalePointLabelContext> ; padding: Scriptable<number, ScriptableScalePointLabelContext> } ; startAngle: number ; suggestedMax: number ; suggestedMin: number ; ticks: RadialTickOptions } |
time | { type: "time" } & Omit<CartesianScaleOptions, "max" | "min"> & { adapters: { date: unknown } ; bounds: "data" | "ticks" ; max: string | number ; min: string | number ; offsetAfterAutoskip: boolean ; suggestedMax: string | number ; suggestedMin: string | number ; ticks: TimeScaleTickOptions ; time: TimeScaleTimeOptions } |
timeseries | { type: "timeseries" } & Omit<CartesianScaleOptions, "max" | "min"> & { adapters: { date: unknown } ; bounds: "data" | "ticks" ; max: string | number ; min: string | number ; offsetAfterAutoskip: boolean ; suggestedMax: string | number ; suggestedMin: string | number ; ticks: TimeScaleTickOptions ; time: TimeScaleTimeOptions } |
# Defined in
types/index.d.ts:669 (opens new window)
# transitions
• transitions: TransitionsSpec<keyof ChartTypeRegistry>
# Inherited from
# Defined in
types/index.d.ts:1758 (opens new window)
# Methods
# describe
▸ describe(scope, values): AnyObject
# Parameters
| Name | Type |
|---|---|
scope | string |
values | AnyObject |
# Returns
AnyObject
# Defined in
types/index.d.ts:677 (opens new window)
# get
▸ get(scope): AnyObject
# Parameters
| Name | Type |
|---|---|
scope | string |
# Returns
AnyObject
# Defined in
types/index.d.ts:675 (opens new window)
# onClick
▸ onClick(event, elements, chart): void
Called if the event is of type 'mouseup' or 'click'. Passed the event, an array of active elements, and the chart.
# Parameters
| Name | Type |
|---|---|
event | ChartEvent |
elements | ActiveElement[] |
chart | Chart<keyof ChartTypeRegistry, (number | [number, number] | Point | BubbleDataPoint)[], unknown> |
# Returns
void
# Inherited from
# Defined in
types/index.d.ts:1682 (opens new window)
# onHover
▸ onHover(event, elements, chart): void
Called when any of the events fire. Passed the event, an array of active elements (bars, points, etc), and the chart.
# Parameters
| Name | Type |
|---|---|
event | ChartEvent |
elements | ActiveElement[] |
chart | Chart<keyof ChartTypeRegistry, (number | [number, number] | Point | BubbleDataPoint)[], unknown> |
# Returns
void
# Inherited from
# Defined in
types/index.d.ts:1677 (opens new window)
# onResize
▸ onResize(chart, size): void
Called when a resize occurs. Gets passed two arguments: the chart instance and the new size.
# Parameters
| Name | Type |
|---|---|
chart | Chart<keyof ChartTypeRegistry, (number | [number, number] | Point | BubbleDataPoint)[], unknown> |
size | Object |
size.height | number |
size.width | number |
# Returns
void
# Inherited from
# Defined in
types/index.d.ts:1656 (opens new window)
# override
▸ override(scope, values): AnyObject
# Parameters
| Name | Type |
|---|---|
scope | string |
values | AnyObject |
# Returns
AnyObject
# Defined in
types/index.d.ts:678 (opens new window)
# route
▸ route(scope, name, targetScope, targetName): void
Routes the named defaults to fallback to another scope/name. This routing is useful when those target values, like defaults.color, are changed runtime. If the values would be copied, the runtime change would not take effect. By routing, the fallback is evaluated at each access, so its always up to date.
Example:
defaults.route('elements.arc', 'backgroundColor', '', 'color')
- reads the backgroundColor from defaults.color when undefined locally
# Parameters
| Name | Type | Description |
|---|---|---|
scope | string | Scope this route applies to. |
name | string | Property name that should be routed to different namespace when not defined here. |
targetScope | string | The namespace where those properties should be routed to. Empty string ('') is the root of defaults. |
targetName | string | The target name in the target scope the property should be routed to. |
# Returns
void
# Defined in
types/index.d.ts:697 (opens new window)
# set
▸ set(values): AnyObject
# Parameters
| Name | Type |
|---|---|
values | AnyObject |
# Returns
AnyObject
# Defined in
types/index.d.ts:673 (opens new window)
▸ set(scope, values): AnyObject
# Parameters
| Name | Type |
|---|---|
scope | string |
values | AnyObject |
# Returns
AnyObject