A function that allows you to create nested questions if you do not specify the elementsJSON property.

A function that allows you to create a custom question if you do not specify the questionJSON property.

JSON schemas of nested questions. Specify this property to create a composite question type.

A function that allows you to override the default getDisplayValue() implementation.

An icon for the custom question type.

A name used to identify a custom question type.

A function that is called after the entire question is rendered.

Parameters:

• question: Question
  A custom question.
• htmlElement: any
  An HTML element that represents the custom question.

A function that is called each time a question nested within a composite question is rendered.

Parameters:

• question: Question
  A composite question.
• element: Question
  A nested question.
• htmlElement: any
  An HTML element that represents a nested question.

A function that is called when the custom question is created. Use it to access questions nested within a composite question type.

Parameters:

• question: Question
  The custom question.

A function that is called when the custom question type is initialized. Use it to add, remove, or modify the type's properties (see Override Base Question Properties).

A function that is called when an ItemValue property is changed.

Parameters:

• question: Question
  A custom question.
• options.obj: ItemValue
  An ItemValue object.
• options.propertyName: String
  The name of the property to which an array of ItemValue objects is assigned (for example, "choices" or "rows").
• options.name: String
  The name of the changed property: "text" or "value".
• options.newValue: any
  A new value for the property.

A function that is called when JSON schemas are loaded.

Parameters:

• question: Question
  A custom question.

A function that is called when a custom question type property is changed. Use it to handle property changes.

Parameters:

• question: Question
  A custom question.
• propertyName: String
  The name of the changed property.
• newValue: any
  A new value for the property.

A function that is called each time a question nested within a composite question requires an update of its CSS classes.

Parameters:

• question: Question
  A composite question.
• element: Question
  A nested question.
• cssClasses: any
  An object with CSS classes applied to a nested question, for example, { root: "class1", button: "class2" }. You can modify this object to apply custom CSS classes.

A function that is called after the question value is changed.

Parameters:

• question: Question
  A custom question.
• name: String
  The question's name.
• newValue: any
  A new value for the question.

A function that is called before a question value is changed.

This function should return the value you want to save: newValue, a custom value, or undefined if you want to clear the question value.

Parameters:

• question: Question
  A custom question.
• name: String
  The question's name.
• newValue: any
  A new value for the question.

A JSON schema for a built-in question type on which the custom question type is based.

Refer to the Create Specialized Question Types help topic for more information.

Specifies whether the custom question type is available in the Toolbox and the Add Question menu.

Default value: true

Set this property to false if your custom question type is used only to customize Property Grid content and is not meant for a survey.

A title used for this custom question type in the UI. When title is not specified, the name property value is used.