PageModel, SurveyJS Library Documentation

The page object. It has elements collection, that contains questions and panels.

Inherited from the following class(es):

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	addElement method
	Add an element into Panel or Page. Returns true if the element added successfully. Otherwise returns false. Type: (element: IElement, index?: number) => boolean Parameters: element, type: IElement index, type: number , element index in the elements array Implemented in: PanelModelBase
	addNewPanel method
	Creates a new panel and adds it into the end of the elements list. Returns null, if the panel could not be created or could not be added into page or panel. Type: (name?: string) => PanelModel Parameters: name, type: string , a panel name Implemented in: PanelModelBase
	addNewQuestion method
	Creates a new question and adds it at location of index, by default the end of the elements list. Returns null, if the question could not be created or could not be added into page or panel. Type: (questionType: string, name?: string, index?: number) => Question Parameters: questionType, type: string , the possible values are: "text", "checkbox", "dropdown", "matrix", "html", "matrixdynamic", "matrixdropdown" and so on. name, type: string , a question name index, type: number , element index in the elements array Implemented in: PanelModelBase
	addPanel method
	Add a panel into Panel or Page. Returns true if the panel added successfully. Otherwise returns false. Type: (panel: PanelModel, index?: number) => boolean Parameters: panel, type: PanelModel index, type: number , element index in the elements array Implemented in: PanelModelBase
	addPanelsIntoList method
	Fill list array with the panels. Type: (list: IPanel[], visibleOnly?: boolean, includingDesignTime?: boolean) => void Parameters: list, type: IPanel[] visibleOnly, type: boolean includingDesignTime, type: boolean Implemented in: PanelModelBase
	addQuestion method
	Add a question into Panel or Page. Returns true if the question added successfully. Otherwise returns false. Type: (question: Question, index?: number) => boolean Parameters: question, type: Question index, type: number , element index in the elements array Implemented in: PanelModelBase
	addQuestionsToList method
	Fill list array with the questions. Type: (list: IQuestion[], visibleOnly?: boolean, includingDesignTime?: boolean) => void Parameters: list, type: IQuestion[] visibleOnly, type: boolean , set it to true to get visible questions only includingDesignTime, type: boolean Implemented in: PanelModelBase
	areQuestionsRandomized property
	The property returns true, if the elements are randomized on the page Type: boolean readonly Implemented in: PageModel See also: hasShown , questionsOrder , SurveyModel.questionsOrder
	clearErrors method
	Call this function to clear all errors in the panel / page and all its child elements (panels and questions) Type: () => void Implemented in: PanelModelBase
	clearIncorrectValues method
	Call this function to remove all question values from the current page/panel, that end-user will not be able to enter. For example the value that doesn't exists in a radigroup/dropdown/checkbox choices or matrix rows/columns. Please note, this function doesn't clear values for invisible questions or values that doesn't associated with questions. Type: () => void Implemented in: PanelModelBase See also: Question.clearIncorrectValues
	clone method
	Make a clone of the existing object. Create a new object of the same type and load all properties into it. Type: () => Base Implemented in: Base
	containsElement method
	Returns true if the current element belongs to the Panel/Page. It looks in nested Panels as well. Type: (element: IElement) => boolean Parameters: element, type: IElement Implemented in: PanelModelBase See also: PanelModel
	containsErrors property
	Returns true if a question or a container (panel/page) or their chidren have an error. The value can be out of date. hasErrors function should be called to get the correct value. Type: boolean readonly Implemented in: SurveyElement
	description property
	PanelModel or PageModel description property. It renders under title by using smaller font. Unlike the title, description can be empty. Type: string writable The property is serializable. It is stored in survey json and you can edit it in the SurveyJS Creator. Implemented in: PanelModelBase See also: title
	elements property
	Returns the list of the elements in the object, Panel/Page. Elements can be questions or panels. The function doesn't return elements in the nested Panels. Type: IElement[] readonly The property is serializable. It is stored in survey json and you can edit it in the SurveyJS Creator. Implemented in: PanelModelBase
	enableIf property
	An expression that returns true or false. If it returns false the Panel/Page becomes read only and an end-user will not able to answer on qustions inside it. The library runs the expression on survey start and on changing a question value. If the property is empty then readOnly property is used. Type: string writable The property is serializable. It is stored in survey json and you can edit it in the SurveyJS Creator. Implemented in: PanelModelBase See also: readOnly , isReadOnly
	errors property
	The list of errors. It is created by callig hasErrors functions Type: SurveyError[] writable Implemented in: SurveyElement See also: hasErrors
	focusFirstErrorQuestion method
	Call it to focus the input of the first question that has an error. Type: () => void Implemented in: PanelModelBase
	focusFirstQuestion method
	Call it to focus the input on the first question Type: () => void Implemented in: PanelModelBase
	fromJSON method
	Load object properties and elements. It doesn't reset properties that was changed before and they are not defined in the json parameter. Type: (json: any) => void Parameters: json, type: any , the object JSON definition Implemented in: Base See also: toJSON
	getComments method
	Returns question comments on the current page Type: () => any Implemented in: PanelModelBase
	getElementByName method
	Returns the element by its name. It works recursively. Type: (name: string) => IElement Parameters: name, type: string , the element name Implemented in: PanelModelBase
	getPanels method
	Returns the list of all panels in the page Type: (visibleOnly?: boolean, includingDesignTime?: boolean) => IPanel[] Parameters: visibleOnly, type: boolean includingDesignTime, type: boolean Implemented in: PageModel
	getPropertyValue method
	Returns the property value by name Type: (name: string, defaultValue?: any) => any Parameters: name, type: string , property name defaultValue, type: any Implemented in: Base
	getQuestionByName method
	Returns the question by its name Type: (name: string) => Question Parameters: name, type: string , the question name Implemented in: PanelModelBase
	getTemplate method
	Returns the element template name without prefix. Typically it equals to getType(). Type: () => string Implemented in: Base See also: getType
	getType method
	Returns the type of the object as a string as it represents in the json. It should be in lowcase. Type: () => string Implemented in: Base
	getValue method
	Returns question values on the current page Type: () => any Implemented in: PanelModelBase
	hasErrors method
	Returns true, if there is an error on this Page or inside the current Panel Type: (fireCallback?: boolean, focusOnFirstError?: boolean, rec?: any) => boolean Parameters: fireCallback, type: boolean , set it to true, to show errors in UI focusOnFirstError, type: boolean , set it to true to focus on the first question that doesn't pass the validation rec, type: any Implemented in: PanelModelBase
	id property
	A unique element identificator. It is generated automatically. Type: string writable Implemented in: PanelModelBase
	indexOf method
	Returns the index of element parameter in the elements list. Type: (element: IElement) => number Parameters: element, type: IElement , question or panel Implemented in: PanelModelBase
	isActive property
	Returns true if the current object is Page and it is the current page. Type: boolean readonly Implemented in: PanelModelBase
	isDesignMode property
	Returns true if the question in design mode right now. Type: boolean readonly Implemented in: SurveyElement
	isLoadingFromJson property
	Returns true if the object is loading from Json at the current moment. Type: boolean readonly Implemented in: Base
	isPanel property
	Returns true if the current object is Panel. Returns false if the current object is Page (a root Panel). Type: boolean readonly Implemented in: PanelModelBase
	isPanel property
	Return false if it is not panel. Type: boolean readonly Implemented in: SurveyElement
	isReadOnly property
	Returns true if readOnly property is true or survey is in display mode or parent panel/page is readOnly. Type: boolean readonly Implemented in: PanelModelBase See also: SurveyModel.model , readOnly
	isRequired property
	Set this property to true, to require the answer at least in one question in the panel. Type: boolean writable Implemented in: PanelModelBase
	isStarted property
	Returns true, if the page is started page in the survey. It can be shown on the start only and the end-user could not comeback to it after it passed it. Type: boolean readonly Implemented in: PageModel
	isValueEmpty method
	A static methods that returns true if a value underfined, null, empty string or empty array. Type: (value: any) => boolean Parameters: value, type: any Implemented in: Base
	isVisible property
	Returns true if object is visible or survey is in design mode right now. Type: boolean readonly Implemented in: PanelModelBase
	maxTimeToFinish property
	The maximum time in seconds that end-user has to complete the page. If the value is 0 or less, the end-user has unlimited number of time to finish the page. Type: number writable The property is serializable. It is stored in survey json and you can edit it in the SurveyJS Creator. Implemented in: PageModel See also: startTimer , SurveyModel.maxTimeToFinishPage
	name property
	This is the identifier of a survey element - question or panel. Type: string writable Implemented in: SurveyElement See also: valueName
	navigationButtonsVisibility property
	Set this property to "hide" to make "Prev", "Next" and "Complete" buttons are invisible for this page. Set this property to "show" to make these buttons visible, even if survey showNavigationButtons property is false. Type: string writable The property is serializable. It is stored in survey json and you can edit it in the SurveyJS Creator. The default value is: inherit You may set the following values into this property: inherit , show , hide Implemented in: PageModel See also: SurveyMode.showNavigationButtons
	onItemValuePropertyChanged event
	Event that raised on changing property of the ItemValue object. sender - the object that owns the property options.propertyName - the property name to which ItemValue array is belong. It can be "choices" for dropdown question options.obj - the instance of ItemValue object which property has been changed options.name - the property of ItemObject that has been changed options.oldValue - old value options.newValue - new value Type: Event<(sender: Base, options: any) => any, any> Implemented in: Base
	onPropertyChanged event
	Event that raise on property change of the sender object sender - the object that owns the property options.name - the property name that has been changed options.oldValue - old value. Please note, it equals to options.newValue if property is an array options.newValue - new value. Type: Event<(sender: Base, options: any) => any, any> Implemented in: Base
	parent property
	A parent element. It is always null for the Page object and always not null for the Panel object. Panel object may contain Questions and other Panels. Type: PanelModelBase writable Implemented in: PanelModelBase
	processedTitle property
	Returns rendered title text or html. Type: string readonly Implemented in: PanelModelBase
	questions property
	Returns the list of all questions located in the Panel/Page, including in the nested Panels. Type: Question[] readonly Implemented in: PanelModelBase See also: Question , elements
	questionsOrder property
	Use this property to randomize questions. Set it to 'random' to randomize questions, 'initial' to keep them in the same order or 'default' to use the Survey questionsOrder property Type: string writable The property is serializable. It is stored in survey json and you can edit it in the SurveyJS Creator. The default value is: default You may set the following values into this property: default , initial , random Implemented in: PageModel See also: SurveyModel.questionsOrder , areQuestionsRandomized
	questionTitleLocation property
	Set this property different from "default" to set the specific question title location for this panel/page. Type: string writable The property is serializable. It is stored in survey json and you can edit it in the SurveyJS Creator. The default value is: default You may set the following values into this property: default , top , bottom , left , hidden Implemented in: PanelModelBase See also: SurveyModel.questionTitleLocation
	readOnly property
	Set it to true to make an element question/panel/page readonly. Please note, this property is hidden for question without input, for example html question. Type: boolean writable Implemented in: SurveyElement See also: enableIf , isReadOnly
	registerFunctionOnPropertiesValueChanged method
	Register a function that will be called on a property value changed from the names list. Type: (names: string[], func: any, key?: string) => void Parameters: names, type: string[] , the list of properties names func, type: any , the function with no parameters that will be called on property changed. key, type: string , an optional parameter. If there is already a registered function for this property with the same key, it will be overwritten. Implemented in: Base
	registerFunctionOnPropertyValueChanged method
	Register a function that will be called on a property value changed. Type: (name: string, func: any, key?: string) => void Parameters: name, type: string , the property name func, type: any , the function with no parameters that will be called on property changed. key, type: string , an optional parameter. If there is already a registered function for this property with the same key, it will be overwritten. Implemented in: Base
	removeElement method
	Remove an element (Panel or Question) from the elements list. Type: (element: IElement) => boolean Parameters: element, type: IElement Implemented in: PanelModelBase See also: elements
	removeQuestion method
	Remove question from the elements list. Type: (question: Question) => void Parameters: question, type: Question Implemented in: PanelModelBase See also: elements , removeElement
	requiredErrorText property
	The custom text that will be shown on required error. Use this property, if you do not want to show the default text. Type: string writable Implemented in: PanelModelBase
	requiredText property
	Returns the char/string for a required panel. Type: string readonly Implemented in: PanelModelBase See also: SurveyModel.requiredText
	scrollToTop method
	Call it to scroll to the page top. Type: () => void Implemented in: PageModel
	setPropertyValue method
	set property value Type: (name: string, val: any) => void Parameters: name, type: string , property name val, type: any , new property value Implemented in: Base
	survey property
	Returns the survey object. Type: ISurvey readonly Implemented in: SurveyElement
	timeSpent property
	Time in seconds end-user spent on this page Type: number readonly Implemented in: PageModel
	title property
	PanelModel or PageModel title property. Type: string writable The property is serializable. It is stored in survey json and you can edit it in the SurveyJS Creator. Implemented in: PanelModelBase
	toJSON method
	Deserialized the current object into JSON Type: () => any Implemented in: Base See also: fromJSON
	unRegisterFunctionOnPropertiesValueChanged method
	Unregister notification on property value changed for all properties in the names list. Type: (names: string[], key?: string) => void Parameters: names, type: string[] , the list of properties names key, type: string , the key with which you have registered the notification for this property. It can be null. Implemented in: Base
	unRegisterFunctionOnPropertyValueChanged method
	Unregister notification on property value changed Type: (name: string, key?: string) => void Parameters: name, type: string , the property name key, type: string , the key with which you have registered the notification for this property. It can be null. Implemented in: Base
	visible property
	Use it to get/set the object visibility. Type: boolean writable The property is serializable. It is stored in survey json and you can edit it in the SurveyJS Creator. The default value is: True Implemented in: PanelModelBase See also: visibleIf
	visibleIf property
	An expression that returns true or false. If it returns true the Panel becomes visible and if it returns false the Panel becomes invisible. The library runs the expression on survey start and on changing a question value. If the property is empty then visible property is used. Type: string writable The property is serializable. It is stored in survey json and you can edit it in the SurveyJS Creator. Implemented in: PanelModelBase See also: visible
	visibleIndex property
	The visible index of the page. It has values from 0 to visible page count - 1. Type: number writable Implemented in: PageModel See also: SurveyModel.visiblePages , SurveyModel.pages
	wasShown property
	The property returns true, if the page has been shown to the end-user. Type: boolean readonly Implemented in: PageModel

PageModel

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