Visualforce Developer Guide

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Introducing Visualforce
Tools for Visualforce Development
Getting a Quick Start with Visualforce
Customizing the Appearance and Output of Visualforce Pages
Standard Controllers
Standard List Controllers
Custom Controllers and Controller Extensions
Advanced Examples
Override Buttons, Links, and Tabs with Visualforce
Using Static Resources
Creating and Using Custom Components
Dynamic Visualforce Bindings
Dynamic Visualforce Components
Integrate Email with Visualforce
Visualforce Charting
Creating Maps with Visualforce
Render Flows with Visualforce
Templating with Visualforce
Developing Salesforce Apps with Visualforce
Adding Visualforce to a Salesforce AppExchange App
Using JavaScript in Visualforce Pages
Communicating Across the DOM with Lightning Message Service
Visualforce Best Practices
Standard Visualforce Component Reference
analytics:reportChart
apex:actionFunction
apex:actionPoller
apex:actionRegion
apex:actionStatus
apex:actionSupport
apex:areaSeries
apex:attribute
apex:axis
apex:barSeries
apex:canvasApp
apex:chart
apex:chartLabel
apex:chartTips
apex:column
apex:commandButton
apex:commandLink
apex:component
apex:componentBody
apex:composition
apex:dataList
apex:dataTable
apex:define
apex:detail
apex:dynamicComponent
apex:emailPublisher
apex:enhancedList
apex:facet
apex:flash
apex:form
apex:gaugeSeries
apex:iframe
apex:image
apex:include
apex:includeLightning
apex:includeScript
apex:inlineEditSupport
apex:input
apex:inputCheckbox
apex:inputField
apex:inputFile
apex:inputHidden
apex:inputSecret
apex:inputText
apex:inputTextarea
apex:insert
apex:legend
apex:lineSeries
apex:listViews
apex:logCallPublisher
apex:map
apex:mapInfoWindow
apex:mapMarker
apex:message
apex:messages
apex:milestoneTracker
apex:outputField
apex:outputLabel
apex:outputLink
apex:outputPanel
apex:outputText
apex:page
apex:pageBlock
apex:pageBlockButtons
apex:pageBlockSection
apex:pageBlockSectionItem
apex:pageBlockTable
apex:pageMessage
apex:pageMessages
apex:panelBar
apex:panelBarItem
apex:panelGrid
apex:panelGroup
apex:param
apex:pieSeries
apex:radarSeries
apex:relatedList
apex:remoteObjectField
apex:remoteObjectModel
apex:remoteObjects
apex:repeat
apex:scatterSeries
apex:scontrol
apex:sectionHeader
apex:selectCheckboxes
apex:selectList
apex:selectOption
apex:selectOptions
apex:selectRadio
apex:slds
apex:stylesheet
apex:tab
apex:tabPanel
apex:toolbar
apex:toolbarGroup
apex:variable
apex:vote
chatter:feed
chatter:feedWithFollowers
chatter:follow
chatter:followers
chatter:newsfeed
chatter:userPhotoUpload
chatteranswers:aboutme
chatteranswers:allfeeds
chatteranswers:changepassword
chatteranswers:datacategoryfilter
chatteranswers:feedfilter
chatteranswers:feeds
chatteranswers:forgotpassword
chatteranswers:forgotpasswordconfirm
chatteranswers:guestsignin
chatteranswers:help
chatteranswers:login
chatteranswers:registration
chatteranswers:searchask
chatteranswers:singleitemfeed
flow:interview
ideas:detailOutputLink
ideas:listOutputLink
ideas:profileListOutputLink
knowledge:articleCaseToolbar
knowledge:articleList
knowledge:articleRendererToolbar
knowledge:articleTypeList
knowledge:categoryList
liveAgent:clientChat
liveAgent:clientChatAlertMessage
liveAgent:clientChatCancelButton
liveAgent:clientChatEndButton
liveAgent:clientChatFileTransfer
liveAgent:clientChatInput
liveAgent:clientChatLog
liveAgent:clientChatLogAlertMessage
liveAgent:clientChatMessages
liveAgent:clientChatQueuePosition
liveAgent:clientChatSaveButton
liveAgent:clientChatSendButton
liveAgent:clientChatStatusMessage
messaging:attachment
messaging:emailHeader
messaging:emailTemplate
messaging:htmlEmailBody
messaging:plainTextEmailBody
site:googleAnalyticsTracking
site:previewAsAdmin
social:profileViewer
support:caseArticles
support:caseFeed
support:caseUnifiedFiles
support:clickToDial
support:portalPublisher
topics:widget
wave:dashboard
Appendices
PDF

apex:iframe

A component that creates an inline frame within a Visualforce page. With a frame, you can keep some information visible while other information is scrolled or replaced.

This component supports HTML pass-through attributes using the html prefix. Pass-through attributes are attached to the generated <iframe> tag.

External websites included in Salesforce use iframes, which restrict features that can track users. When the external website is in an iframe, browser settings can prevent the external website from using local storage and receiving or writing third-party cookies in callouts to APIs.

To prevent clickjacking attacks, many websites, including https://salesforce.com, restrict browsers from rendering their pages in an inline frame. For example, if a page has its X-Frame-Options HTTP response header set to sameorigin, a browser can only load that page in an inline frame if the frame has the same origin as the page.

Also, to frame content from an external website that requires authentication, the authentication process can require a cookie. Because the external website is on a different domain than the Visualforce page, that cookie is a third-party cookie. When browsers block third-party cookies, you can’t load the authenticated content unless the website owner provides another authentication method.

Note

Example

<apex:iframe src="https://amazon.com" scrolling="true" id="theIframe"/>

The previous example renders the following HTML:

<iframe height="600px" id="theIframe" name="theIframe" src="https://amazon.com" width="100%"></iframe>

Attributes

Attribute Name Attribute Type Description Required? API Version Access
frameborder Boolean A Boolean value that specifies whether a border surrounds the inline frame. If not specified, this value defaults to false. 10.0 global
height String The height of the inline frame expressed either as a percentage of the total available vertical space (for example, height="50%") or as the number of pixels (for example, height="300px"). If not specified, this value defaults to 600 px. 10.0 global
id String An identifier that allows other components in the page to reference the inline frame component. 10.0 global
rendered Boolean A Boolean value that specifies whether the component is rendered on the page. If not specified, this value defaults to true. 10.0 global
scrolling Boolean A Boolean value that specifies whether the inline frame can be scrolled. If not specified, this value defaults to true. 10.0 global
src String The URL that specifies the initial contents of the inline frame. This URL can either be an external website or another page in the application. For example, to render the static resource MyAsset on a separate domain from Visualforce: 
<apex:iframe src="{$IFrameResource.MyAsset}" scrolling="true" id="theIframe"/>
 10.0 global
title String The text to display as a tooltip when the user’s pointer hovers over this component. 10.0 global
width String The width of the inline frame expressed either as a percentage of the total available horizontal space (for example, width="80%") or as the number of pixels (for example, width="600px"). 10.0 global