scoped
An overlay that can be used to indicate activity while blocking user interaction. The loading indicator appears on top of the app's content, and can be dismissed by the app to resume user interaction with the app. It includes an optional backdrop, which can be disabled by setting showBackdrop: false upon creation.
Once presented, the loading indicator will display indefinitely by default. Developers can manually dismiss the loading indicator after creation by calling the dismiss() method on the component. The onDidDismiss function can be called to perform an action after the loading indicator is dismissed.
Alternatively, developers can configure the loading indicator to dismiss automatically after a specific amount of time by passing the number of milliseconds to display it in the duration of the loading options.
The spinner that is used can be customized using the spinner property. See the spinner property documentation for a full list of options.
Loading uses scoped encapsulation, which means it will automatically scope its CSS by appending each of the styles with an additional class at runtime. Overriding scoped selectors in CSS requires a higher specificity selector.
We recommend passing a custom class and using that to add custom styles to the host and inner elements.
ion-loading is presented at the root of your application, so we recommend placing any ion-loading styles in a global stylesheet.
Ionic automatically sets Loading's role to dialog.
If the message property is defined for Loading, then the aria-labelledby attribute will be automatically set to the message element's ID. Otherwise, aria-labelledby will not be set, and developers must provide an aria-label using the htmlAttributes property.
All ARIA attributes can be manually overwritten by defining custom values in the htmlAttributes property of Loading.
interface LoadingOptions {
spinner?: SpinnerTypes | null;
message?: string | IonicSafeString;
cssClass?: string | string[];
showBackdrop?: boolean;
duration?: number;
translucent?: boolean;
animated?: boolean;
backdropDismiss?: boolean;
mode?: Mode;
keyboardClose?: boolean;
id?: string;
htmlAttributes?: { [key: string]: any };
enterAnimation?: AnimationBuilder;
leaveAnimation?: AnimationBuilder;
}
| Description | If true, the loading indicator will animate. |
| Attribute | animated |
| Type | boolean |
| Default | true |
| Description | If true, the loading indicator will be dismissed when the backdrop is clicked. |
| Attribute | backdrop-dismiss |
| Type | boolean |
| Default | false |
| Description | Additional classes to apply for custom CSS. If multiple classes are provided they should be separated by spaces. |
| Attribute | css-class |
| Type | string ｜ string[] ｜ undefined |
| Default | undefined |
| Description | Number of milliseconds to wait before dismissing the loading indicator. |
| Attribute | duration |
| Type | number |
| Default | 0 |
| Description | Animation to use when the loading indicator is presented. |
| Attribute | undefined |
| Type | ((baseEl: any, opts?: any) => Animation) ｜ undefined |
| Default | undefined |
| Description | Additional attributes to pass to the loader. |
| Attribute | undefined |
| Type | undefined ｜ { [key: string]: any; } |
| Default | undefined |
| Description | If true, the loading indicator will open. If false, the loading indicator will close. Use this if you need finer grained control over presentation, otherwise just use the loadingController or the trigger property. Note: isOpen will not automatically be set back to false when the loading indicator dismisses. You will need to do that in your code. |
| Attribute | is-open |
| Type | boolean |
| Default | false |
| Description | If true, the keyboard will be automatically dismissed when the overlay is presented. |
| Attribute | keyboard-close |
| Type | boolean |
| Default | true |
| Description | Animation to use when the loading indicator is dismissed. |
| Attribute | undefined |
| Type | ((baseEl: any, opts?: any) => Animation) ｜ undefined |
| Default | undefined |
| Description | Optional text content to display in the loading indicator.
This property accepts custom HTML as a string. Content is parsed as plaintext by default. innerHTMLTemplatesEnabled must be set to true in the Ionic config before custom HTML can be used. |
| Attribute | message |
| Type | IonicSafeString ｜ string ｜ undefined |
| Default | undefined |
| Description | The mode determines which platform styles to use.
This is a virtual property that is set once during initialization and will not update if you change its value after the initial render. |
| Attribute | mode |
| Type | "ios" ｜ "md" |
| Default | undefined |
| Description | If true, a backdrop will be displayed behind the loading indicator. |
| Attribute | show-backdrop |
| Type | boolean |
| Default | true |
| Description | The name of the spinner to display. |
| Attribute | spinner |
| Type | "bubbles" ｜ "circles" ｜ "circular" ｜ "crescent" ｜ "dots" ｜ "lines" ｜ "lines-sharp" ｜ "lines-sharp-small" ｜ "lines-small" ｜ null ｜ undefined |
| Default | undefined |
| Description | If true, the loading indicator will be translucent. Only applies when the mode is "ios" and the device supports backdrop-filter. |
| Attribute | translucent |
| Type | boolean |
| Default | false |
| Description | An ID corresponding to the trigger element that causes the loading indicator to open when clicked. |
| Attribute | trigger |
| Type | string ｜ undefined |
| Default | undefined |
| Name | Description | Bubbles |
|---|
didDismiss | Emitted after the loading indicator has dismissed. Shorthand for ionLoadingDidDismiss. | true |
didPresent | Emitted after the loading indicator has presented. Shorthand for ionLoadingWillDismiss. | true |
ionLoadingDidDismiss | Emitted after the loading has dismissed. | true |
ionLoadingDidPresent | Emitted after the loading has presented. | true |
ionLoadingWillDismiss | Emitted before the loading has dismissed. | true |
ionLoadingWillPresent | Emitted before the loading has presented. | true |
willDismiss | Emitted before the loading indicator has dismissed. Shorthand for ionLoadingWillDismiss. | true |
willPresent | Emitted before the loading indicator has presented. Shorthand for ionLoadingWillPresent. | true |
| Description | Dismiss the loading overlay after it has been presented. |
| Signature | dismiss(data?: any, role?: string) => Promise<boolean> |
| Parameters | data: Any data to emit in the dismiss events.
role: The role of the element that is dismissing the loading. This can be useful in a button handler for determining which button was clicked to dismiss the loading. Some examples include: ``"cancel", "destructive", "selected", and "backdrop".
This is a no-op if the overlay has not been presented yet. If you want to remove an overlay from the DOM that was never presented, use the remove method. |
| Description | Returns a promise that resolves when the loading did dismiss. |
| Signature | onDidDismiss<T = any>() => Promise<OverlayEventDetail<T>> |
| Description | Returns a promise that resolves when the loading will dismiss. |
| Signature | onWillDismiss<T = any>() => Promise<OverlayEventDetail<T>> |
| Description | Present the loading overlay after it has been created. |
| Signature | present() => Promise<void> |
No CSS shadow parts available for this component.
| Name | Description |
|---|
--backdrop-opacity | Opacity of the backdrop |
--background | Background of the loading dialog |
--height | Height of the loading dialog |
--max-height | Maximum height of the loading dialog |
--max-width | Maximum width of the loading dialog |
--min-height | Minimum height of the loading dialog |
--min-width | Minimum width of the loading dialog |
--spinner-color | Color of the loading spinner |
--width | Width of the loading dialog |
No slots available for this component.