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JavaScript/jQuery Popup Methods

This section describes members used to manipulate the widget.

beginUpdate()

Prevents the widget from refreshing until the endUpdate() method is called.

The beginUpdate() and endUpdate() methods prevent the widget from excessive updates when you are changing multiple widget settings at once. After the beginUpdate() method is called, the widget does not update its UI until the endUpdate() method is called.

See Also

content()

Gets the widget's content.

Return Value:

HTMLElement | jQuery

An HTML element or a jQuery element when you use jQuery.

See Also

defaultOptions(rule)

Specifies the device-dependent default configuration options for this component.

Parameters:
rule:

Object

The component's default device options.

Object structure:
Name Type Description
device

Device

|

Array<Device>

|

Function

Device parameters.
When specifying a function, get information about the current device from the argument. Return true if the options should be applied to the device.

options

Object

Options to be applied.

defaultOptions is a static method that the widget class supports. The following code demonstrates how to specify default options for all instances of the Popup widget in an application executed on the desktop.

jQuery
JavaScript
DevExpress.ui.dxPopup.defaultOptions({ 
    device: { deviceType: "desktop" },
    options: {
        // Here go the Popup options
    }
});
Angular
TypeScript
import Popup from "devextreme/ui/popup";
// ...
export class AppComponent {
    constructor () {
        Popup.defaultOptions({
            device: { deviceType: "desktop" },
            options: {
                // Here go the Popup options
            }
        });
    }
}
Vue
<template>
    <div>
        <DxPopup id="popup1" />
        <DxPopup id="popup2" />
    </div>
</template>
<script>
import DxPopup from "devextreme-vue/popup";
import Popup from "devextreme/ui/popup";

Popup.defaultOptions({
    device: { deviceType: "desktop" },
    options: {
        // Here go the Popup options
    }
});

export default {
    components: {
        DxPopup
    }
}
</script>
React
import React from "react";
import dxPopup from "devextreme/ui/popup";
import Popup from "devextreme-react/popup";

class App extends React.Component {
    render () {
        dxPopup.defaultOptions({
            device: { deviceType: "desktop" },
            options: {
                // Here go the Popup options
            }
        })
        return (
            <div>
                <Popup id="popup1" />
                <Popup id="popup2" />
            </div>
        )
    }
}

export default App;

dispose()

Disposes of all the resources allocated to the Popup instance.

After calling this method, remove the DOM element associated with the widget:

JavaScript
$("#myPopup").dxPopup("dispose");
$("#myPopup").remove();

Use this method only if the widget was created with jQuery or pure JavaScript. In Angular, Vue, and React, use conditional rendering:

Angular
app.component.html
<dx-popup ...
    *ngIf="condition">
</dx-popup>
Vue
App.vue
<template>
    <DxPopup ...
        v-if="condition">
    </DxPopup>
</template>

<script>
import DxPopup from 'devextreme-vue/popup';

export default {
    components: {
        DxPopup
    }
}
</script>
React
App.js
import React from 'react';

import Popup from 'devextreme-react/popup';

function DxPopup(props) {
    if (!props.shouldRender) {
        return null;
    }

    return (
        <Popup ... >    
        </Popup>
    );
}

class App extends React.Component {
    render() {
        return (
            <DxPopup shouldRender="condition" />
        );
    }
}
export default App;
See Also

element()

Gets the root widget element.

Return Value:

HTMLElement | jQuery

An HTML element or a jQuery element when you use jQuery.

See Also

endUpdate()

Refreshes the widget after a call of the beginUpdate() method.

Main article: beginUpdate()

See Also

focus()

Sets focus on the widget.

See Also

getInstance(element)

Gets the instance of a widget found using its DOM node.

Parameters:
element:

Element

|

jQuery

The widget's container.

Return Value:

Object

The widget's instance.

getInstance is a static method that the widget class supports. The following code demonstrates how to get the Popup instance found in an element with the myPopup ID:

// Modular approach
import Popup from "devextreme/ui/popup";
...
let element = document.getElementById("myPopup");
let instance = Popup.getInstance(element) as Popup;

// Non-modular approach
let element = document.getElementById("myPopup");
let instance = DevExpress.ui.dxPopup.getInstance(element);
See Also

hide()

Hides the widget.

Return Value:

Promise<Boolean> (jQuery or native)

A Promise that is resolved after the widget is hidden. It is a native Promise or a jQuery.Promise when you use jQuery.

See Also

instance()

Gets the widget's instance. Use it to access other methods of the widget.

Return Value:

Popup

This widget's instance.

See Also

off(eventName)

Detaches all event handlers from a single event.

Parameters:
eventName:

String

The event's name.

Return Value:

Popup

The object for which this method is called.

See Also

off(eventName, eventHandler)

Detaches a particular event handler from a single event.

Parameters:
eventName:

String

The event's name.

eventHandler:

Function

The event's handler.

Return Value:

Popup

The object for which this method is called.

See Also

on(eventName, eventHandler)

Subscribes to an event.

Parameters:
eventName:

String

The event's name.

eventHandler:

Function

The event's handler.

Return Value:

Popup

The object for which this method is called.

Use this method to subscribe to one of the events listed in the Events section.

See Also

on(events)

Subscribes to events.

Parameters:
events:

Object

Events with their handlers: { "eventName1": handler1, "eventName2": handler2, ...}

Return Value:

Popup

The object for which this method is called.

Use this method to subscribe to several events with one method call. Available events are listed in the Events section.

See Also

option()

Gets all widget options.

Return Value:

Object

The widget's options.

option(optionName)

Gets the value of a single option.

Parameters:
optionName:

String

The option's name or full path.

Return Value: any

This option's value.

option(optionName, optionValue)

Updates the value of a single option.

Parameters:
optionName:

String

The option's name or full path.

optionValue: any

This option's new value.

option(options)

Updates the values of several options.

Parameters:
options:

Object

Options with their new values.

registerKeyHandler(key, handler)

Registers a handler to be executed when a user presses a specific key.

Parameters:
key:

String

A key.

handler:

Function

A handler. Accepts the keydown event as the argument. It is a dxEvent 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()

Recalculates the widget's size and position without rerendering.

See Also

resetOption(optionName)

Resets an option to its default value.

Parameters:
optionName:

String

An option's name.

See Also

show()

Shows the widget.

Return Value:

Promise<Boolean> (jQuery or native)

A Promise that is resolved after the widget is shown. It is a native Promise or a jQuery.Promise when you use jQuery.

The widget is automatically hidden after the time specified in the displayTime option.

See Also

toggle(showing)

Shows or hides the widget depending on the argument.

Parameters:
showing:

Boolean

Specifies whether to show or hide the widget.

Return Value:

Promise<Boolean> (jQuery or native)

A Promise that is resolved with true if the widget is shown or false if it is hidden. It is a native Promise or a jQuery.Promise when you use jQuery.

You can use the toggle(showing) method instead of the show() and hide() methods. In this case, pass true or false as the method parameter to show or hide the widget.

The widget is automatically hidden after the time specified in the displayTime option.

See Also