JavaScript/jQuery Funnel Options

See Also

• Configure a Widget: jQuery | Angular | AngularJS | Knockout | ASP.NET MVC

When adapting to small container size, the widget may hide its accessory elements, thus saving space for more valuable ones. The elements are being hidden in the following sequence.

1. Title
2. Export menu icon
3. Legend
4. Item labels (can be saved by setting the adaptiveLayout.keepLabels option to true)

To specify the widget's size small enough for the layout to begin adapting, use the height and width options of the adaptiveLayout object.

View Demo on JSFiddle

See Also

• Adaptive Layout

Two algorithms are available:

• "dynamicSlope"

  The each funnel item's form depends on the ratio between the current and the next item's value.

• "dynamicHeight"

  The height of each funnel item is proportional to the item's value. This algorithm produces a pyramid which is upturned by default. You can return it to normal by assigning true to the inverted option. You can also transform the pyramid's peak into a funnel's neck using the neckHeight and neckWidth options.

See Also

• argumentField
• valueField
• colorField

See Also

• valueField
• colorField

The colors must have one of the following formats:

• Hexadecimal colors
• RGB colors
• RGBA colors
• Predefined/cross-browser color names
• Predefined SVG colors

See Also

• argumentField
• valueField

This option accepts one of the following:

• Array of objects
  A simple JavaScript array containing a collection of plain objects.

• URL
  The URL of a JSON file or service that returns JSON data.

• DataSource or its configuration object
  A DataSource is an object that provides an API for data processing. Learn more about it from the Data Layer and DataSource Examples guides.

  NOTE

  Turn the DataSource's pagination off to prevent data from partitioning.

See Also

• argumentField | valueField | colorField
• getDataSource()

These features allow a user to export your widget into a document or print it. When exporting is enabled, the "Exporting/Printing" button appears in the widget. A click on it invokes a drop-down menu that lists exporting and printing commands. The following formats are supported for exporting into: PNG, PDF, JPEG, SVG and GIF.

See Also

• exportTo(fileName, format)
• print()
• DevExpress.viz.exportFromMarkup(markup, options)

Watch Video

See Also

• item.hoverStyle
• onHoverChanged

The legend is a component that helps a user identify funnel items. The legend contains several items, one per funnel item, each consisting of a colored marker and text showing the funnel item's argument.

You can make the legend visible by setting the legend.visible option to true.

When the widget visualizes local data, loading is instant. But when the widget is bound to a remote data source, loading may takes a considerable amount of time. To keep the viewer's attention, the widget can display a loading indicator.

To activate the loading indicator, assign true to the loadingIndicator.show option. Once data is loaded, the loading indicator will be hidden automatically.

See Also

• showLoadingIndicator()
• hideLoadingIndicator()

See Also

• onExporting
• onFileSaving

See Also

• onExported
• onFileSaving

See Also

• onExporting
• onExported

To identify whether the pointer has entered or left the funnel item, call the item's isHovered() method.

The widget notifies you of errors and warnings by passing messages to the browser console. Each message contains the incident's ID, a brief description, and a link to the Errors and Warnings section where further information about this incident can be found.

The onIncidentOccurred function allows you to handle errors and warnings the way you require. The object passed to it contains the target field. This field provides information about the occurred incident and contains the following properties:

• id
  The incident's ID. The full list of IDs can be found in the Errors and Warnings section.
• type
  The incident's type: "error" or "warning".
• args
  The argument of the incident's message. Depends on the incident. For example, it may be the name of the data source field that was specified incorrectly, or the name of the option that was not set properly.
• text
  The text passed to the browser's console. Includes the args content, if there is any.
• widget
  The name of the widget that produced the error or warning.
• version
  The used DevExtreme version.

You cannot access widget elements in this function because it is executed before they are ready. Use the onDrawn function instead.

This function is often used to implement item selection as shown in the following code:

$(function () {
    $("#funnelContainer").dxFunnel({
        // ...
        onItemClick: function (e) {
            e.item.select(!e.item.isSelected())
        }
    });
});

<dx-funnel ...
    (onItemClick)="selectItem($event)">
</dx-funnel>

import { DxFunnelModule } from "devextreme-angular";
// ...
export class AppComponent {
    selectItem (e) {
        e.item.select(!e.item.isSelected())
    }
}
@NgModule({
    imports: [
        // ...
        DxFunnelModule
    ],
    // ...
})

See Also

• selectionMode
• onSelectionChanged

See Also

• legend

To identify whether the selection has been applied or canceled, call the funnel item's isSelected() method.

See onItemClick to learn how to implement selection.

See Also

• selectionMode
• item.selectionStyle

This option accepts either the name of a predefined palette or an array of colors. The array can include the following colors:

• Hexadecimal colors
• RGB colors
• RGBA colors
• Predefined/cross-browser color names
• Predefined SVG colors

Use the VizPalette enum to specify this option when the widget is used as an ASP.NET MVC Control. This enum accepts the following values: Default, SoftPastel, HarmonyLight, Pastel, Bright, Soft, Ocean, Vintage, Violet, Carmine, DarkMoon, SoftBlue, DarkViolet, and GreenMist.

See Also

• Palettes
• paletteExtensionMode
• colorField

The following variants are available:

• "blend"
  Create a blend of two neighboring colors and insert it between these colors in the palette.

• "alternate"
  Repeat the full set of palette colors, alternating their normal, lightened, and darkened shades in that order.

• "extrapolate"
  Repeat the full set of palette colors, changing their shade gradually from dark to light.

If you place the widget on a page that uses a tag modifying the path (<base>, <iframe>, etc.), some of the widget elements may get mixed up or disappear. To solve this problem, set the pathModified option to true.

See Also

• DevExpress.viz.refreshPaths()

When this option is set to true, the widget will be redrawn automatically in case the size of its parent window changes.

When this option is set to true, the widget 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
});

See onItemClick to learn how to implement selection.

The widget occupies its container's entire area by default. Use the size object to specify the widget's size if it should be different from that of its container. Assign 0 to size object's height and width options to hide the widget.

true puts bigger values on the top, smaller on the bottom; false keeps the order specified in the data source.

See Also

• inverted

A theme is a widget configuration that gives the widget a distinctive appearance. Use can use one of the predefined themes or create a custom one. Changing the option values in the widget's configuration object overrides the theme's corresponding values.

Use the VizTheme enum to specify this option when the widget is used as an ASP.NET MVC Control. This enum accepts the following values: GenericLight, GenericDark, GenericContrast, GenericCarmine, GenericDarkMoon, GenericSoftBlue, GenericDarkViolet, GenericGreenMist, IOS7Default, MaterialBlueLight, MaterialLimeLight, MaterialOrangeLight, MaterialPurpleLight, MaterialTealLight.

The widget's title is a short text that usually indicates what is visualized. If you need to specify the title's text only, assign it directly to the title option. Otherwise, set this option to an object with the text and other fields specified.

The title can be accompanied by a subtitle elaborating on the visualized subject using the title.subtitle object.

See Also

• argumentField
• colorField