JavaScript/jQuery Draggable Options
This section describes properties that configure the Draggable UI component's contents, behavior, and appearance.
dragTemplate
| Name | Type | Description |
|---|---|---|
| itemData | any |
The item's data. |
| itemElement |
The container of the item being dragged. It is an HTML Element or a jQuery Element when you use jQuery. |
elementAttr
Specifies the global attributes to be attached to the UI component's container element.
jQuery
$(function(){
$("#draggableContainer").dxDraggable({
// ...
elementAttr: {
id: "elementId",
class: "class-name"
}
});
});Angular
<dx-draggable ...
[elementAttr]="{ id: 'elementId', class: 'class-name' }">
</dx-draggable>
import { DxDraggableModule } from "devextreme-angular";
// ...
export class AppComponent {
// ...
}
@NgModule({
imports: [
// ...
DxDraggableModule
],
// ...
})Vue
<template>
<DxDraggable ...
:element-attr="draggableAttributes">
</DxDraggable>
</template>
<script>
import DxDraggable from 'devextreme-vue/draggable';
export default {
components: {
DxDraggable
},
data() {
return {
draggableAttributes: {
id: 'elementId',
class: 'class-name'
}
}
}
}
</script>React
import React from 'react';
import Draggable from 'devextreme-react/draggable';
class App extends React.Component {
draggableAttributes = {
id: 'elementId',
class: 'class-name'
}
render() {
return (
<Draggable ...
elementAttr={this.draggableAttributes}>
</Draggable>
);
}
}
export default App;height
This property accepts a value of one of the following types:
Number
The height in pixels.String
A CSS-accepted measurement of height. For example,"55px","80%","inherit".Function
A function returning either of the above. For example:JavaScriptheight: function() { return window.innerHeight / 1.5; }
onDisposing
A function that is executed before the UI component is disposed of.
| Name | Type | Description |
|---|---|---|
| component | Draggable |
The UI component's instance. |
| element |
The UI component's container. It is an HTML Element or a jQuery Element when you use jQuery. |
|
| model | any |
Model data. Available only if you use Knockout. |
onDragEnd
| Name | Type | Description |
|---|---|---|
| cancel |
Allows you to cancel the gesture. |
|
| component |
The UI component that raised the event. |
|
| element |
The UI component's container. It is an HTML Element or a jQuery Element when you use jQuery. |
|
| event | Event (jQuery or EventObject) |
The event that caused the function to execute. It is an EventObject or a jQuery.Event when you use jQuery. |
| fromComponent | | |
The instance of the item's source UI component. |
| fromData | any |
Custom data associated with the source UI component. |
| itemData | any |
The dragged item's data. |
| itemElement |
The container of the item being dragged. It is an HTML Element or a jQuery Element when you use jQuery. |
|
| model | any |
Model data. Available only if you use Knockout. |
| toComponent | | |
The instance of the item's target UI component. |
| toData | any |
Custom data associated with the target UI component. |
onDragMove
| Name | Type | Description |
|---|---|---|
| cancel |
Allows you to cancel the gesture. |
|
| component |
The UI component that raised the event. |
|
| element |
The UI component's container. It is an HTML Element or a jQuery Element when you use jQuery. |
|
| event | Event (jQuery or EventObject) |
The event that caused the function to execute. It is an EventObject or a jQuery.Event when you use jQuery. |
| fromComponent | | |
The instance of the item's source UI component. |
| fromData | any |
Custom data associated with the source UI component. |
| itemData | any |
The dragged element's data. |
| itemElement |
The container of the item being dragged. It is an HTML Element or a jQuery Element when you use jQuery. |
|
| model | any |
Model data. Available only if you use Knockout. |
| toComponent | | |
The instance of the item's target UI component. |
| toData | any |
Custom data associated with the target UI component. |
onDragStart
| Name | Type | Description |
|---|---|---|
| cancel |
Allows you to cancel the gesture. |
|
| component |
The UI component that raised the event. |
|
| element |
The UI component's container. It is an HTML Element or a jQuery Element when you use jQuery. |
|
| event | Event (jQuery or EventObject) |
The event that caused the function to execute. It is an EventObject or a jQuery.Event when you use jQuery. |
| fromData | any |
Custom data associated with the source UI component. |
| itemData | any |
The dragged item's data. |
| itemElement |
The container of the item being dragged. It is an HTML Element or a jQuery Element when you use jQuery. |
|
| model | any |
Model data. Available only if you use Knockout. |
onInitialized
| Name | Type | Description |
|---|---|---|
| component | Draggable |
The UI component's instance. |
| element |
The UI component's container. It is an HTML Element or a jQuery Element when you use jQuery. |
onOptionChanged
| Name | Type | Description |
|---|---|---|
| model | any |
Model data. Available only if you use Knockout. |
| fullName |
The path to the modified property that includes all parent properties. |
|
| element |
The UI component's container. It is an HTML Element or a jQuery Element when you use jQuery. |
|
| component | Draggable |
The UI component's instance. |
| name |
The modified property if it belongs to the first level. Otherwise, the first-level property it is nested into. |
|
| value | any |
The modified property's new value. |
The following example shows how to subscribe to component property changes:
jQuery
$(function() {
$("#draggableContainer").dxDraggable({
// ...
onOptionChanged: function(e) {
if(e.name === "changedProperty") {
// handle the property change here
}
}
});
});Angular
<dx-draggable ...
(onOptionChanged)="handlePropertyChange($event)">
</dx-draggable>
import { Component } from '@angular/core';
@Component({
selector: 'app-root',
templateUrl: './app.component.html',
styleUrls: ['./app.component.css']
})
export class AppComponent {
// ...
handlePropertyChange(e) {
if(e.name === "changedProperty") {
// handle the property change here
}
}
}
import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { AppComponent } from './app.component';
import { DxDraggableModule } from 'devextreme-angular';
@NgModule({
declarations: [
AppComponent
],
imports: [
BrowserModule,
DxDraggableModule
],
providers: [ ],
bootstrap: [AppComponent]
})
export class AppModule { } Vue
<template>
<DxDraggable ...
@option-changed="handlePropertyChange"
/>
</template>
<script>
import 'devextreme/dist/css/dx.light.css';
import DxDraggable from 'devextreme-vue/draggable';
export default {
components: {
DxDraggable
},
// ...
methods: {
handlePropertyChange: function(e) {
if(e.name === "changedProperty") {
// handle the property change here
}
}
}
}
</script> React
import React from 'react';
import 'devextreme/dist/css/dx.light.css';
import Draggable from 'devextreme-react/draggable';
const handlePropertyChange = (e) => {
if(e.name === "changedProperty") {
// handle the property change here
}
}
export default function App() {
return (
<Draggable ...
onOptionChanged={handlePropertyChange}
/>
);
} rtlEnabled
When this property is set to true, the UI component text flows from right to left, and the layout of elements is reversed. To switch the entire application/site to the right-to-left representation, assign true to the rtlEnabled field of the object passed to the DevExpress.config(config) method.
DevExpress.config({
rtlEnabled: true
});scrollSensitivity
Specifies the distance in pixels from the edge of viewport at which scrolling should start. Applies only if autoScroll is true.
scrollSpeed
Specifies the scrolling speed when dragging an item beyond the viewport. Applies only if autoScroll is true.
width
This property accepts a value of one of the following types:
Number
The width in pixels.String
A CSS-accepted measurement of width. For example,"55px","80%","auto","inherit".Function
A function returning either of the above. For example:JavaScriptwidth: function() { return window.innerWidth / 1.5; }