JavaScript/jQuery Accordion Methods
beginUpdate()
Postpones rendering that can negatively affect performance until the endUpdate() method is called.
The beginUpdate() and endUpdate() methods reduce the number of renders in cases where extra rendering can negatively affect performance.
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)
Name | Type | Description |
---|---|---|
device | | |
Device parameters. |
options |
Options to be applied. |
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.
- DevExpress.ui.dxAccordion.defaultOptions({
- device: { deviceType: "desktop" },
- options: {
- // Here go the Accordion properties
- }
- });
You can also set rules for multiple device types:
- const devicesConfig = [
- { deviceType: 'desktop' },
- { deviceType: 'tablet' },
- { deviceType: 'phone' },
- ];
- devicesConfig.forEach(deviceConfig => {
- DevExpress.ui.dxAccordion.defaultOptions({
- device: deviceConfig,
- options: {
- // Here go the Accordion properties
- }
- });
- });
endUpdate()
Refreshes the UI component after a call of the beginUpdate() method.
The beginUpdate() and endUpdate() methods reduce the number of renders in cases where extra rendering can negatively affect performance.
See Also
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
repaint()
Renders the component again without reloading data. Use the method to update the component's markup and appearance dynamically.
The repaint()
method re-initializes the component with new settings, resetting its state and history.
See Also
- reload() in DataSource | List
- refresh() in DataGrid | TreeList
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.