Web Event

Web Event : object

Parámetros	Tipo		Descripción
Resultado	Object	←	Información sobre el evento activado

Descripción

Web Event returns an object with information on a triggered event linked to a web page component.

The command must be called in the context of a web page handled by the 4D web server.

Resultado

El objeto devuelto contiene las siguientes propiedades:

Propiedad		Tipo	Descripción
caller		string	Server-side reference of the component triggering the event
eventType		string	Type of event: onblur onfocus onclick onauxclick onmouseenter onmouseleave onkeyup onkeydown onchange unload onload - triggered when the Page loads
data		object	Información adicional en función del componente implicado
	index	number	Tabs component: index of the tab (indexing starts at 0) Data Table component: column number
	row	number	Componente de la tabla de datos: número de línea
	name	string	Data Table component: qodlysource name of the column (e.g. "firstname", "address.city")

Ejemplo

The objective is to display/hide a help text when the user hovers over the component:

This is done by attaching onmouseenter and onmouseleave events to a Text input component that displays the information stored in a Text component (displaying "This is the help text").

En este escenario:

• The Text input component has orderNumber as Server side reference.
• El componente Texto tiene helpOn_orderNumber como referencia del lado Servidor.
• The exposed function help() is attached to both the onmouseenter and onmouseleave events and contains the following code:

shared singleton Class constructor()
exposed Function help()
	
	var event : Object
	var myForm : 4D.WebForm
	var componentRef : Text
	
	myForm:=web Form
	event:=web Event
	componentRef:=event.caller

	Case of 
		: (event.eventType="onmouseenter")  // event is onmouseenter 
			myForm["helpOn_"+componentRef].show()  // show the help on "orderNumber" by showing  
			// the text component with reference "helpOn_orderNumber" 
		: (event.eventType="onmouseleave")  // event is onmouseleave 
			myForm["helpOn_"+componentRef].hide()  // hide the help on orderNumber
			
	End case 

To open the web page with the help on orderNumber hidden, you can associate this function to the onload event of the web page:

exposed function hideOnLoad()
	webForm.helpOn_orderNumber.hide()

Ver también

Web Form
WebForm class
WebFormItem class

Propiedades

Número de comando	1734
Hilo seguro	✗