Angular Accordion Methods
beginUpdate()
Prevents the UI component from refreshing until the endUpdate() method is called.
The beginUpdate() and endUpdate() methods prevent the UI component from excessive updates when you are changing multiple UI component settings at once. After the beginUpdate() method is called, the UI component does not update its UI until the endUpdate() method is called.
See Also
collapseItem(index)
A Promise that is resolved if the item is collapsed and rejected otherwise. It is a native Promise or a jQuery.Promise when you use jQuery.
defaultOptions(rule)
defaultOptions is a static method that the UI component class supports. The following code demonstrates how to specify default properties for all instances of the Accordion UI component in an application executed on the desktop.
- import Accordion, { Properties } from "devextreme/ui/accordion";
- // ...
- export class AppComponent {
- constructor () {
- Accordion.defaultOptions<Properties>({
- device: { deviceType: "desktop" },
- options: {
- // Here go the Accordion properties
- }
- });
- }
- }
dispose()
Use conditional rendering instead of this method:
- <dx-accordion ...
- *ngIf="condition">
- </dx-accordion>
expandItem(index)
A Promise that is resolved if the item is expanded and rejected otherwise. It is a native Promise or a jQuery.Promise when you use jQuery.
getDataSource()
Gets the DataSource instance.
See Also
getInstance(element)
getInstance is a static method that the UI component class supports. The following code demonstrates how to get the Accordion instance found in an element with the myAccordion
ID:
- // Modular approach
- import Accordion from "devextreme/ui/accordion";
- ...
- let element = document.getElementById("myAccordion");
- let instance = Accordion.getInstance(element) as Accordion;
- // Non-modular approach
- let element = document.getElementById("myAccordion");
- let instance = DevExpress.ui.dxAccordion.getInstance(element);
See Also
on(eventName, eventHandler)
Use this method to subscribe to one of the events listed in the Events section.
See Also
on(events)
Use this method to subscribe to several events with one method call. Available events are listed in the Events section.
See Also
registerKeyHandler(key, handler)
A handler. Accepts the keydown event as the argument. It is a EventObject or a jQuery.Event when you use jQuery.
The key argument accepts one of the following values:
- "backspace"
- "tab"
- "enter"
- "escape"
- "pageUp"
- "pageDown"
- "end"
- "home"
- "leftArrow"
- "upArrow"
- "rightArrow"
- "downArrow"
- "del"
- "space"
- "F"
- "A"
- "asterisk"
- "minus"
A custom handler for a key cancels the default handler for this key.
See Also
updateDimensions()
A Promise that is resolved after the update is completed. It is a native Promise or a jQuery.Promise when you use jQuery.
Use this method to fit the UI component contents to the UI component size after it (size) has been changed.
See Also
If you have technical questions, please create a support ticket in the DevExpress Support Center.