Methods

This section describes the methods that can be used in code to manipulate the widget.

See Also

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

clearSelection()

Deselects the chart's selected series. The series is displayed in an initial style.

To learn about series selection, refer to the Selection Handling help section.

See Also

element()

Gets the root element of the widget.

Return Value:

jQuery

The root element of the widget.

See Also

endUpdate()

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

Main article: beginUpdate()

See Also

exportTo(fileName, format)

Exports the widget into a document with a specified name and format.

Parameters:
fileName:

String

The name of a destination file.

format:

String

A required format.
Accepted Values: 'PNG' | 'PDF' | 'JPEG' | 'SVG' | 'GIF'

NOTE
IE9 and Safari on Mac OS do not implement an API for saving files. Therefore, exporting in these browsers requires setting up a server-side proxy. For details, refer to the export | proxyUrl option description.
See Also

getAllSeries()

Returns an array of all series in the chart.

Return Value:

Array

The series from the chart's series collection.

To learn about series members you can use, refer to the description of the Series object.

See Also

getDataSource()

Returns the DataSource instance.

Return Value:

DataSource

The DataSource instance.

NOTE
This method returns the DataSource instance even if the dataSource option of the widget was given a simple array.
See Also

getSeriesByName(seriesName)

Gets a series within the chart's series collection by the specified name (see the name option).

Parameters:
seriesName: any

The name of the series to be found.

Return Value:

Object

The series that is found by the specified name.

If a series with the specified name is not found, the method returns null.

To learn about series members you can use, refer to the description of the Series object.

See Also

getSeriesByPos(seriesIndex)

Gets a series within the chart's series collection by its position number.

Parameters:
seriesIndex:

Number

The index of the series to be found within the chart's series collection.

Return Value:

Object

The series that is found by the specified position index.

Series in the chart's series collection are arranged as they are defined in the series array of the chart's configuration object. Note that the series are numbered from zero in the series collection.

To learn about series' members that you can use, refer to the description of the Series object.

See Also

getSize()

Gets the current size of the widget.

Return Value:

Object

The current size of the widget.

Returns an object with the following fields.

  • width
    The width of the widget in pixels.
  • height
    The height of the widget in pixels.
See Also

hideLoadingIndicator()

Conceals the loading indicator.

Although the loading indicator hides automatically when the widget is ready, you can hide it from code at the required time using the hideLoadingIndicator() method.

If you need to show the loading indicator, invoke the showLoadingIndicator() method.

See Also

hideTooltip()

Hides all widget tooltips.

Use this method to hide all widget tooltips programmatically.

See Also

instance()

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

Return Value:

Object

This widget's instance.

See Also

off(eventName)

Detaches all event handlers from the specified event.

Parameters:
eventName:

String

The name of the event to unsubscribe from.

Return Value:

Object

The object for which this method is called.

See Also

off(eventName, eventHandler)

Detaches a particular event handler from the specified event.

Parameters:
eventName:

String

The name of the event to unsubscribe from.

eventHandler:

Function

The handler to be detached from the specified event.

Return Value:

Object

The object for which this method is called.

See Also

on(eventName, eventHandler)

Subscribes to a specified event.

Parameters:
eventName:

String

The name of the event to be subscribed.

eventHandler:

Function

An event handler for the specified event.

Return Value:

Object

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 the specified events.

Parameters:
events:

Object

An object of the following structure: { "eventName1": handler1, "eventName2": handler2, ...}

Return Value:

Object

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 the widget's options.

Return Value:

Object

The widget's options.

option(optionName)

Gets a specific option value.

Parameters:
optionName:

String

The option name or the full path to the option.

Return Value: any

This option value.

option(optionName, optionValue)

Assigns a new value to a specific option.

Parameters:
optionName:

String

The option name or the full path to the option.

optionValue: any

A new value for this option.

option(options)

Sets one or more options.

Parameters:
options:

Object

The options along with their new values.

print()

Opens the browser's print window.

See Also

render()

Redraws the widget.

Normally, the widget will redraw itself automatically after the browser window is resized. But on rare occasions, you may need to request the redrawing, e.g., after the widget container is resized. For this purpose, call the render() method.

See Also

render(renderOptions)

Redraws a widget.

Parameters:
renderOptions:

Object

An object containing rerendering options.

You can call the render method without parameters after the size or visibility of the widget container is changed. Alternatively, call the render method passing an object as the parameter. This object must contain the force field set to 'true'. In addition, you can use this object to specify whether or not to perform animation on redrawing with the animate field, and whether or not to redraw the widget in an asynchronous mode with the asyncSeriesRendering field.

The following code sample illustrates the example of the object that can be passed to the render method.

JavaScript
var renderOptions = {
    force: true, // forces redrawing
    animate: false, // redraws the widget without animation
    asyncSeriesRendering: false // redraws the widget synchronously
}
See Also

showLoadingIndicator()

Displays the loading indicator.

This method shows the loading indicator. To hide it, call the hideLoadingIndicator() method.

See Also

svg()

Returns the widget's SVG markup.

Return Value:

String

The widget's SVG markup.

zoomArgument(startValue, endValue)

Sets the specified start and end values for the chart's argument axis.

Parameters:
startValue:

Number

|

Date

|

String

A new start value for the argument axis.

endValue:

Number

|

Date

|

String

A new end value for the argument axis.

This function can be used when implementing zooming for your chart. If your chart is integrated with the RangeSelector widget, call the zoomArgument function when the range selector's selected range is changed. Pass the start and end values of the range selector's selected range as the corresponding parameters of the function.

When the chart's adjustOnZoom option is set to true, the maximum and minimum values of the chart's value axis are changed to correspond to the maximum and minimum values of the chart's series. This is required to remove the empty area in the chart that may appear when changing the maximum and minimum values of the argument axis. To prevent value axis adjustment in response to argument axis boundary changes, set the adjustOnZoom option to false.

View Demo

See Also