API Reference: Matrix Table Question | Form Builder Libraries

A class that describes the Single-Choice Matrix question type.

View Demo

Inherited from the following class(es):

QuestionMatrixBaseModel

Question

SurveyElement

SurveyElementCore

Base

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	alternateRows property
	Specifies whether to apply shading to alternate matrix rows. Type: boolean readonly This property is stored in the survey JSON definition and can be edited in the Survey Creator. Implemented in: QuestionMatrixBaseModel
	clearErrors method
	Empties the `errors` array. Type: () => void Implemented in: Question See also: errors
	clearIfInvisible property
	Specifies when to clear the question value if the question becomes invisible. Possible values: `"default"` (default) - Inherits the setting from the Survey's `clearInvisibleValues` property. `"onHidden"` - Clears the value when the question becomes invisible. If a question is invisible on startup and has an initial value, this value will be cleared when the survey is complete. `"onComplete"` - Clears the value when the survey is complete. `"none"` - Never clears the value of an invisible question. Type: string writable This property is stored in the survey JSON definition and can be edited in the Survey Creator. Default value: default Accepted values: default , none , onComplete , onHidden Implemented in: Question See also: SurveyModel.clearInvisibleValues * , visible * , SurveyModel.onComplete
	clearIncorrectValues method
	Removes values that cannot be assigned to this question, for example, choices unlisted in the `choices` array. Call this method after you assign new question values in code to ensure that they are acceptable. This method does not remove values that do not pass validation. Call the `validate()` method to validate newly assigned values. Type: () => void Implemented in: Question See also: validate
	clearValue method
	Sets the question's `value` and `comment` properties to `undefined`. Type: () => void Implemented in: Question See also: value * , comment
	clone method
	Creates a new object that has the same type and properties as the current SurveyJS object. Type: () => Base Implemented in: Base
	collapse method
	Collapses the survey element. In collapsed state, the element displays only `title` and `description`. Type: () => void Implemented in: SurveyElement See also: title * , description * , state * , toggleState * , expand * , isCollapsed * , isExpanded
	columnMinWidth property
	Minimum column width in CSS values. Type: string writable This property is stored in the survey JSON definition and can be edited in the Survey Creator. Implemented in: QuestionMatrixBaseModel See also: width
	columns property
	An array of matrix columns. This array can contain primitive values or objects with the `text` (display value) and `value` (value to be saved in survey results) properties. View Demo Type: any[] writable Implemented in: QuestionMatrixBaseModel
	columnsVisibleIf property
	A Boolean expression that is evaluated against each matrix column. If the expression evaluates to `false`, the column becomes hidden. A survey parses and runs all expressions on startup. If any values used in the expression change, the survey re-evaluates it. Use the `{item}` placeholder to reference the current column in the expression. Refer to the following help topic for more information: Conditional Visibility. Type: string writable This property is stored in the survey JSON definition and can be edited in the Survey Creator. Implemented in: QuestionMatrixBaseModel See also: rowsVisibleIf
	comment property
	A comment to the selected question value. Enable the `showCommentArea` property to allow users to leave comments. Type: string writable Implemented in: Question See also: showCommentArea * , commentText
	commentPlaceholder property
	A placeholder for the comment area. Applies when the `showCommentArea` property is `true`. Type: string writable This property is stored in the survey JSON definition and can be edited in the Survey Creator. Implemented in: Question See also: showCommentArea * , comment * , commentText
	commentText property
	Specifies a caption displayed above the comment area. Applies when the `showCommentArea` property is `true`. Type: string writable This property is stored in the survey JSON definition and can be edited in the Survey Creator. Implemented in: Question See also: showCommentArea * , comment
	containsErrors property
	Returns `true` if the survey element or its child elements have validation errors. This property contains the result of the most recent validation. This result may be outdated. Call the `validate` method to get an up-to-date value. Type: boolean readonly Implemented in: SurveyElement See also: errors
	correctAnswer property
	A correct answer to this question. Specify this property if you want to create a quiz. Type: any writable This property is stored in the survey JSON definition and can be edited in the Survey Creator. Implemented in: Question See also: SurveyModel.getCorrectAnswerCount * , SurveyModel.getInCorrectAnswerCount
	cssClasses property
	Returns an object in which keys are UI elements and values are CSS classes applied to them. Use the following events of the `SurveyModel` object to override CSS classes: `onUpdatePageCssClasses` `onUpdatePanelCssClasses` `onUpdateQuestionCssClasses` Type: any readonly Implemented in: SurveyElement
	defaultValue property
	A default value for the question. Ignored for question types that cannot have a value (for example, HTML). The default value is used as a question value in the following cases: While the survey is being loaded from JSON. The question is just added to the survey and does not yet have an answer. The respondent left the answer empty. Type: any writable This property is stored in the survey JSON definition and can be edited in the Survey Creator. Implemented in: Question See also: defaultValueExpression
	defaultValueExpression property
	An expression used to calculate the defaultValue. This expression applies until the question value is specified by an end user or programmatically. An expression can reference other questions as follows: `{other_question_name}` `{panel.other_question_name}` (to access questions inside the same dynamic panel) `{row.other_question_name}` (to access questions inside the same dynamic matrix or multi-column dropdown) An expression can also include built-in and custom functions for advanced calculations. For example, if the `defaultValue` should be today's date, set the `defaultValueExpression` to `"today()"`, and the corresponding built-in function will be executed each time the survey is loaded. Refer to the following help topic for more information: Built-In Functions. Type: any writable This property is stored in the survey JSON definition and can be edited in the Survey Creator. Implemented in: Question See also: defaultValue
	description property
	Explanatory text displayed under the title. Type: string writable Implemented in: SurveyElementCore See also: hasDescription
	descriptionLocation property
	Specifies where to display a question description. Possible values: `"default"` (default) - Inherits the setting from the Survey's `questionDescriptionLocation` property. `"underTitle"` - Displays the description under the question title. `"underInput"` - Displays the description under the interactive area. Type: string writable This property is stored in the survey JSON definition and can be edited in the Survey Creator. Default value: default Accepted values: default , underInput , underTitle Implemented in: Question See also: description * , hasDescription
	enableIf property
	A Boolean expression. If it evaluates to `false`, this question becomes read-only. A survey parses and runs all expressions on startup. If any values used in the expression change, the survey re-evaluates it. Refer to the following help topic for more information: Conditional Visibility Type: string writable This property is stored in the survey JSON definition and can be edited in the Survey Creator. Implemented in: Question See also: readOnly * , isReadOnly
	errors property
	Validation errors. Call the `validate()` method to validate survey element data. Type: SurveyError[] writable Implemented in: SurveyElement See also: validate
	expand method
	Expands the survey element. Type: () => void Implemented in: SurveyElement See also: state * , toggleState * , collapse * , isCollapsed * , isExpanded
	focus method
	Moves focus to the input field of this question. Type: (onError?: boolean) => void Parameters: onError, type: boolean , Pass `true` if you want to focus an input field with the first validation error. Default value: `false` (focuses the first input field). Applies to question types with multiple input fields. Implemented in: Question
	fromJSON method
	Assigns a new configuration to the current SurveyJS object. This configuration is taken from a passed JSON object. The JSON object should contain only serializable properties of this SurveyJS object. Event handlers and properties that do not belong to the SurveyJS object are ignored. Type: (json: any) => void Parameters: json, type: any , A JSON object with properties that you want to apply to the current SurveyJS object. Implemented in: Base See also: toJSON
	getDisplayValue method
	Returns a display text that corresponds to the question value. For example, if you call this method for a Dropdown question, it returns an item text instead of an item value. Type: (keysAsText: boolean, value?: any) => any Parameters: keysAsText, type: boolean , Applies when the question value is an object (in Matrix, Multiple Text, and similar questions). Pass `true` if not only values in the object should be display texts, but also keys. Default value: `false`. value, type: any , Specify this parameter to get a display text for a specific value, not for the current question value. If the question value is an object, this parameter should be a similar object. Implemented in: Question
	getLocale method
	Returns the survey's locale. If a default locale is used, this method returns an empty string. To get the applied locale in this case, use the following code: `import { surveyLocalization } from 'survey-core'; const defaultLocale = surveyLocalization.defaultLocale;` Type: () => string Implemented in: SurveyElement See also: Localization & Globalization
	getPlainData method
	Returns the question value as an object in which the question name, title, value, and other parameters are stored as individual properties. If the question can have more than one value (Matrix, Multiple Text), the object enables the `isNode` flag and stores information about these values in the `data` property. Refer to the following help topic for more information: Access Full Survey Results. Pass an object with the `includeEmpty` property set to `false` if you want to skip empty answers. Type: (options?: { includeEmpty?: boolean; includeQuestionTypes?: boolean; calculations?: { propertyName: string; }[]; }) => IQuestionPlainData Parameters: options, type: { includeEmpty?: boolean; includeQuestionTypes?: boolean; calculations?: { propertyName: string; }[]; } Implemented in: Question
	getPropertyByName method
	Returns a `JsonObjectProperty` object with metadata about a serializable property that belongs to the current SurveyJS object. If the property is not found, this method returns `null`. Type: (propName: string) => JsonObjectProperty Parameters: propName, type: string , A property name. Implemented in: Base
	getPropertyValue method
	Returns the value of a property with a specified name. If the property is not found or does not have a value, this method returns either `undefined`, `defaultValue` specified in the property configuration, or a value passed as the `defaultValue` parameter. Type: (name: string, defaultValue?: any) => any Parameters: name, type: string , A property name. defaultValue, type: any , (Optional) A value to return if the property is not found or does not have a value. Implemented in: Base
	getTitleLocation method
	Returns title location calculated based on the question's `titleLocation` property and the `questionTitleLocation` property of the question's containers (survey, page, or panel). Type: () => string Implemented in: Question See also: titleLocation * , SurveyModel.questionTitleLocation
	getType method
	Returns the question type. Possible values: "boolean" "checkbox" "comment" "dropdown" "tagbox" "expression" "file" "html" "image" "imagepicker" "matrix" "matrixdropdown" "matrixdynamic" "multipletext" "panel" "paneldynamic" "radiogroup" "rating" "ranking" "signaturepad" "text" Type: () => string Implemented in: Question
	hasDescription property
	Returns `true` if the survey element has a description. Type: boolean readonly Implemented in: SurveyElementCore See also: description
	hasInput property
	Returns `false` if the question has no input fields (HTML, Image, and similar question types). Type: boolean readonly Implemented in: Question See also: hasSingleInput
	hasSingleInput property
	Returns `false` if the question has no input fields (HTML, Image) or has multiple input fields (Matrix, Multiple Text). Type: boolean readonly Implemented in: Question See also: hasInput
	hasTitle property
	Returns `false` if the `titleLocation` property is set to `"hidden"` or if the question cannot have a title (for example, an HTML question). If the `title` property is `undefined` or set to an empty string, the `hasTitle` property returns `true`, because the question uses its `name` as a title in this case. Type: boolean readonly Implemented in: Question See also: title * , titleLocation
	hideIfRowsEmpty property
	Specifies whether to hide the question when the matrix has no visible rows. Type: boolean writable This property is stored in the survey JSON definition and can be edited in the Survey Creator. Implemented in: QuestionMatrixModel See also: rowsVisibleIf
	hideNumber property
	Hides the question number from the title and excludes the question from numbering. If you want to disable question numbering in the entire survey, set SurveyModel's `showQuestionNumbers` property to `false`. Type: boolean writable This property is stored in the survey JSON definition and can be edited in the Survey Creator. Implemented in: Question See also: SurveyModel.showQuestionNumbers
	id property
	A value to assign to the `id` attribute of the rendered HTML element. A default `id` is generated automatically. Type: string writable Implemented in: Question
	indent property
	Increases or decreases an indent of survey element content from the left edge. Accepts positive integer values and 0. Does not apply in the Default V2 theme. Type: number writable Implemented in: SurveyElement See also: rightIndent
	inSurvey property
	Returns `true` if the object is included in a survey. This property may return `false`, for example, when you create a survey model dynamically. Type: boolean readonly Implemented in: Base
	isAllowTitleLeft property
	Returns `true` if the question can display its title to the left of the input field. Type: boolean readonly Implemented in: Question See also: titleLocation * , getTitleLocation * , hasTitle
	isAllRowRequired property
	Specifies whether each row requires an answer. If a respondent skips a row, the question displays a validation error. Type: boolean writable This property is stored in the survey JSON definition and can be edited in the Survey Creator. Implemented in: QuestionMatrixModel See also: isRequired
	isAnswerCorrect method
	Returns `true` if a question answer matches the `correctAnswer` property value. View Demo Type: () => boolean Implemented in: Question See also: correctAnswer * , SurveyModel.getQuizQuestions
	isCollapsed property
	Returns `true` if the survey element is collapsed. Type: boolean readonly Implemented in: SurveyElement See also: state * , toggleState * , collapse * , expand * , isExpanded
	isDescendantOf method
	Use this method to find out if the current object is of a given `typeName` or inherited from it. Type: (typeName: string) => boolean Parameters: typeName, type: string , One of the values listed in the getType() description. Implemented in: Base See also: getType
	isDesignMode property
	Returns `true` if the survey is being designed in Survey Creator. Type: boolean readonly Implemented in: Base
	isEmpty method
	Returns `true` if the question value is an empty string, array, or object or if it equals `undefined` or `null`. Type: () => boolean Implemented in: Question
	isExpanded property
	Returns `true` if the survey element is expanded. Type: boolean readonly Implemented in: SurveyElement See also: state * , toggleState * , collapse * , expand * , isCollapsed
	isLoadingFromJson property
	Returns `true` if the object configuration is being loaded from JSON. Type: boolean readonly Implemented in: Base
	isPage property
	Returns `true` if the survey element is a page. Type: boolean readonly Implemented in: SurveyElement See also: Base.getType
	isPanel property
	Returns `true` if the survey element is a panel. Type: boolean readonly Implemented in: SurveyElement See also: Base.getType
	isParentVisible property
	Returns `true` if a parent element (page or panel) is visible. Type: boolean readonly Implemented in: Question
	isQuestion property
	Returns `true` if the survey element is a question. Type: boolean readonly Implemented in: SurveyElement See also: Base.getType
	isReadOnly property
	Returns `true` if the survey element or its parent element is read-only. If you want to switch a survey element to the read-only state based on a condition, specify the `enableIf` property. Refer to the following help topic for information: Conditional Visibility. Type: boolean readonly Implemented in: SurveyElement See also: readOnly
	isRequired property
	Makes the question required. If a respondent skips a required question, the survey displays a validation error. Type: boolean writable This property is stored in the survey JSON definition and can be edited in the Survey Creator. Implemented in: Question See also: requiredIf * , Data Validation
	isValueEmpty method
	Returns `true` if a passed `value` is an empty string, array, or object or if it equals to `undefined` or `null`. Type: (value: any, trimString?: boolean) => boolean Parameters: value, type: any , A value to be checked. trimString, type: boolean , (Optional) When this parameter is `true`, the method ignores whitespace characters at the beginning and end of a string value. Pass `false` to disable this functionality. Implemented in: Base
	isVisible property
	Returns `true` if the question is visible or the survey is currently in design mode. If you want to display or hide a question based on a condition, specify the `visibleIf` property. Refer to the following help topic for information: Conditional Visibility. Type: boolean readonly Implemented in: Question See also: visibleIf * , visible * , isParentVisible
	maxWidth property
	Gets or sets maximum survey element width in CSS values. Default value: "100%" (taken from `settings.maxWidth`) Type: string writable Implemented in: SurveyElement See also: minWidth * , renderWidth * , width
	minWidth property
	Gets or sets minimum survey element width in CSS values. Default value: "300px" (taken from `settings.minWidth`) Type: string writable Implemented in: SurveyElement See also: maxWidth * , renderWidth * , width
	name property
	A survey element identifier. Question names must be unique. Type: string writable Implemented in: SurveyElement
	no property
	A question number or letter (depends on the `questionStartIndex` property of the question container (panel, page, or survey)). When the question number, title, or the entire question is invisible, this property returns an empty string. Type: string readonly Implemented in: Question See also: SurveyModel.questionStartIndex * , hideNumber * , titleLocation * , visibleIf
	onItemValuePropertyChanged event
	An event that is raised when an `ItemValue` property is changed. Parameters: `sender`: `this` A SurveyJS object whose property contains an array of `ItemValue` objects. `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`: `"text"` \| `"value"` The name of the changed property. `options.newValue`: `any` A new value for the property. Type: Event<(sender: Base, options: any) => any, Base, any> Implemented in: Base
	onPropertyChanged event
	An event that is raised when a property of this SurveyJS object has changed. Parameters: `sender`: `this` A SurveyJS object whose property has changed. `options.name`: `String` The name of the changed property. `options.newValue`: `any` A new value for the property. `options.oldValue`: `any` An old value of the property. If the property is an array, `oldValue` contains the same array as `newValue` does. Type: EventBase<Base, any> Implemented in: Base
	onReadyChanged event
	An event that is raised when the question's ready state has changed (expressions are evaluated, choices are loaded from a web resource specified by the `choicesByUrl` property, etc.). Parameters: `sender`: `SurveyModel` A survey instance that contains the question whose ready state has changed. `options.isReady`: `Boolean` Indicates whether the question is ready. `options.oldIsReady`: `Boolean` Indicates the previous ready state. Type: EventBase<Question, any> Implemented in: Question
	page property
	Returns a page to which the question belongs and allows you to move this question to a different page. Type: IPage writable This property is stored in the survey JSON definition and can be edited in the Survey Creator. Implemented in: Question
	parent property
	Returns a survey element (panel or page) that contains the question and allows you to move this question to a different survey element. Type: IPanel writable Implemented in: Question
	parentQuestion property
	A Dynamic Panel, Dynamic Matrix, or Dropdown Matrix that includes the current question. This property is `null` for standalone questions. Type: E readonly Implemented in: SurveyElement
	quizQuestionCount property
	The number of quiz questions. A question counts if it is visible, has an input field, and specifies `correctAnswer`. Type: number readonly Implemented in: Question See also: Create a Quiz , correctAnswer * , SurveyModel.getQuizQuestions
	readOnly property
	Makes the survey element read-only. If you want to switch a survey element to the read-only state based on a condition, specify the `enableIf` property. Refer to the following help topic for information: Conditional Visibility. Type: boolean writable Implemented in: SurveyElement See also: isReadOnly
	registerPropertyChangedHandlers method
	Registers a function to call when a property value changes. Type: (propertyNames: string[], handler: any, key?: string) => void Parameters: propertyNames, type: string[] , An array of one or multiple property names. handler, type: any , A function to call when one of the listed properties change. key, type: string , (Optional) A key that identifies the current registration. If a function for one of the properties is already registered with the same key, the function will be overwritten. You can also use the key to subsequently unregister handlers. Implemented in: Base See also: unregisterPropertyChangedHandlers
	renderWidth property
	Returns a calculated width of the rendered survey element in CSS values. Type: string writable Implemented in: SurveyElement See also: width * , minWidth * , maxWidth
	requiredErrorText property
	Specifies a custom error message for a required form field. Type: string writable This property is stored in the survey JSON definition and can be edited in the Survey Creator. Implemented in: Question See also: isRequired
	requiredIf property
	A Boolean expression. If it evaluates to `true`, this question becomes required. A survey parses and runs all expressions on startup. If any values used in the expression change, the survey re-evaluates it. Refer to the following help topic for more information: Conditional Visibility Type: string writable This property is stored in the survey JSON definition and can be edited in the Survey Creator. Implemented in: Question See also: isRequired
	requiredText property
	Returns a character or text string that indicates a required question. Type: string readonly Implemented in: Question See also: SurveyModel.requiredText * , isRequired
	rightIndent property
	Increases or decreases an indent of survey element content from the right edge. Accepts positive integer values and 0. Does not apply in the Default V2 theme. Type: number writable Implemented in: SurveyElement See also: indent
	rows property
	An array of matrix rows. This array can contain primitive values or objects with the `text` (display value) and `value` (value to be saved in survey results) properties. View Demo Type: any[] writable Implemented in: QuestionMatrixBaseModel
	rowsOrder property
	Specifies a sort order for matrix rows. Possible values: "initial" (default) - Preserves the original order of the `rows` array. "random" - Arranges matrix rows in random order each time the question is displayed. Type: string writable This property is stored in the survey JSON definition and can be edited in the Survey Creator. Default value: initial Accepted values: initial , random Implemented in: QuestionMatrixModel See also: rows
	rowsVisibleIf property
	A Boolean expression that is evaluated against each matrix row. If the expression evaluates to `false`, the row becomes hidden. A survey parses and runs all expressions on startup. If any values used in the expression change, the survey re-evaluates it. Use the `{item}` placeholder to reference the current row in the expression. Refer to the following help topic for more information: Conditional Visibility. Type: string writable This property is stored in the survey JSON definition and can be edited in the Survey Creator. Implemented in: QuestionMatrixBaseModel See also: visibleRows * , columnsVisibleIf
	rowTitleWidth property
	A width for the column that displays row titles (first column). Accepts CSS values. Type: string writable Implemented in: QuestionMatrixBaseModel
	setPropertyValue method
	Assigns a new value to a specified property. Type: (name: string, val: any) => void Parameters: name, type: string , A property name. val, type: any , A new value for the property. Implemented in: Base
	showCommentArea property
	Specifies whether to display a comment area. Incompatible with the `showOtherItem` property. Type: boolean writable This property is stored in the survey JSON definition and can be edited in the Survey Creator. Implemented in: Question See also: comment * , commentText * , showOtherItem
	showHeader property
	Specifies whether to display the table header that contains column captions. Default value: `true` Type: boolean writable This property is stored in the survey JSON definition and can be edited in the Survey Creator. Default value: True Implemented in: QuestionMatrixBaseModel
	showOtherItem property
	Specifies whether to display the "Other" choice item. Incompatible with the `showCommentArea` property. Type: boolean writable Implemented in: Question See also: otherText * , otherItem * , otherErrorText * , showCommentArea
	startWithNewLine property
	Disable this property if you want to render the current question on the same line or row with the previous question or panel. Type: boolean writable This property is stored in the survey JSON definition and can be edited in the Survey Creator. Default value: True Implemented in: Question
	state property
	Gets and sets the survey element's expand state. Possible values: `"default"` (default) - The survey element is displayed in full and cannot be collapsed in the UI. `"expanded"` - The survey element is displayed in full and can be collapsed in the UI. `"collapsed"` - The survey element displays only `title` and `description` and can be expanded in the UI. Type: string writable Implemented in: SurveyElement See also: toggleState * , collapse * , expand * , isCollapsed * , isExpanded
	survey property
	Returns the survey object. Type: ISurvey readonly Implemented in: SurveyElement
	title property
	A title for the survey element. If `title` is undefined, the `name` property value is displayed instead. Empty pages and panels do not display their titles or names. Type: string writable Implemented in: SurveyElementCore See also: Configure Question Titles
	titleLocation property
	Sets question title location relative to the input field. Overrides the `questionTitleLocation` property specified for the question's container (survey, page, or panel). Possible values: `"default"` (default) - Inherits the setting from the `questionTitleLocation` property specified for the question's container. `"top"` - Displays the title above the input field. `"bottom"` - Displays the title below the input field. `"left"` - Displays the title to the left of the input field. `"hidden"` - Hides the question title. Certain question types (Matrix, Multiple Text) do not support the `"left"` value. For them, the `"top"` value is used. Type: string writable This property is stored in the survey JSON definition and can be edited in the Survey Creator. Default value: default Accepted values: default , top , bottom , left , hidden Implemented in: Question See also: SurveyModel.questionTitleLocation * , getTitleLocation * , isAllowTitleLeft
	toggleState method
	Toggles the survey element's `state` between collapsed and expanded. Type: () => boolean Implemented in: SurveyElement See also: state * , collapse * , expand * , isCollapsed * , isExpanded
	toJSON method
	Returns a JSON object that corresponds to the current SurveyJS object. Type: () => any Implemented in: Base See also: fromJSON
	unregisterPropertyChangedHandlers method
	Unregisters value change event handlers for the specified properties. Type: (propertyNames: string[], key?: string) => void Parameters: propertyNames, type: string[] , An array of one or multiple property names. key, type: string , (Optional) A key of the registration that you want to cancel. Implemented in: Base See also: registerPropertyChangedHandlers
	useDisplayValuesInDynamicTexts property
	Specifies whether to use display names for question values in placeholders. Default value: `true` This property applies to questions whose values are defined as objects with the `value` and `text` properties (for example, choice items in Radiogroup, Checkbox, and Dropdown questions). You can use question values as placeholders in the following places: Survey element titles and descriptions The `html` property of the HTML question To use a question value as a placeholder, specify the question `name` in curly brackets: `{questionName}`. Refer to the following help topic for more information: Dynamic Texts - Question Values. Type: boolean writable This property is stored in the survey JSON definition and can be edited in the Survey Creator. Default value: True Implemented in: Question
	validate method
	Validates this question and returns `false` if the validation fails. Type: (fireCallback?: boolean, rec?: any) => boolean Parameters: fireCallback, type: boolean , Optional. Pass `false` if you do not want to show validation errors in the UI. rec, type: any Implemented in: Question See also: Data Validation
	validators property
	Question validators. Type: SurveyValidator[] writable This property is stored in the survey JSON definition and can be edited in the Survey Creator. Implemented in: Question See also: Data Validation
	value property
	Gets or sets the question value. Type: any writable Implemented in: Question See also: SurveyModel.setValue * , SurveyModel.getValue
	valueName property
	Specifies an object property that should store the question value. Refer to the Merge Question Values help topic for more information. Type: string writable This property is stored in the survey JSON definition and can be edited in the Survey Creator. Implemented in: Question
	verticalAlign property
	Aligns matrix cell content in the vertical direction. Type: "top" \| "middle" readonly This property is stored in the survey JSON definition and can be edited in the Survey Creator. Default value: middle Accepted values: top , middle Implemented in: QuestionMatrixBaseModel
	visible property
	Gets or sets question visibility. If you want to display or hide a question based on a condition, specify the `visibleIf` property. Refer to the following help topic for information: Conditional Visibility. Type: boolean writable This property is stored in the survey JSON definition and can be edited in the Survey Creator. Default value: True Implemented in: Question See also: isVisible * , visibleIf
	visibleIf property
	A Boolean expression. If it evaluates to `false`, this question becomes hidden. A survey parses and runs all expressions on startup. If any values used in the expression change, the survey re-evaluates it. Refer to the following help topic for more information: Conditional Visibility Type: string writable This property is stored in the survey JSON definition and can be edited in the Survey Creator. Implemented in: Question See also: visible * , isVisible Show More
	visibleIndex property
	Returns the visible index of the question in the survey. It can be from 0 to all visible questions count - 1 The visibleIndex is -1 if the title is 'hidden' or hideNumber is true Type: number readonly Implemented in: Question See also: titleLocation * , hideNumber
	visibleRows property
	Returns an array of visible matrix rows. Type: TRow[] readonly Implemented in: QuestionMatrixBaseModel See also: rowsVisibleIf
	width property
	Sets survey element width in CSS values. Default value: "" Type: string writable Implemented in: SurveyElement See also: minWidth * , maxWidth

QuestionMatrixModel

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