The <apex: iframe> is another important component in the Visualforce page that creates an inline frame within the Visualforce page. It allows users to keep information visible when other information is scrolled or replaced.
The HTML pass-through attributes are supported by this component by using the "html-" prefix.
The <apex: iframe> component has the following attributes:
1. frameborder
The frameborder is a Boolean type attribute used to specify whether a border should surround the inline frame or not. The boolean value true is set as the default value for this attribute.
Syntax
<apex:iframe frameborder="true"></apex:iframe>
2. height
The height is a string-type attribute used to specify the height of the inline frame. The value can be defined in percentage or pixels. By default, its value is set to 600px.
Syntax
<apex:iframe height="500px"></apex:iframe>
3. id
The id is a string-type attribute, i.e., a unique identifier that allows this component to be referenced by other components on the page.
Syntax
<apex:iframe id="frameId"></apex:iframe>
4. rendered
The rendered is a Boolean type attribute that specifies whether this component needs to be rendered on the page or not. The boolean value true is set as the default value for this attribute.
Syntax
<apex:iframe rendered="false"></apex:iframe>
5. scrolling
The scrolling is a Boolean type attribute used to specify whether this component needs to be scrolled on the page or not. The boolean value true is set as the default value for this attribute.
Syntax
<apex:iframe scrolling="false"></apex:iframe>
6. src
The src is a string type attribute, i.e., a URL that specifies the initial contents of the inline frame. We can define a URL either of the external website or another page in the application.
Syntax
<apex:iframe src="{$IFrameResource.MyAsset}" scrolling="true" id="theIframe"></apex:iframe>
7. title
The title is a string-type attribute that defines the text that needs to display as a tooltip when the user's mouse pointer hovers over this component.
Syntax
AD
<apex:iframe title="iframe title"></apex:iframe>
8. width
The width is a string-type attribute used to specify the width of the inline frame. The value can be defined in percentage or pixels. By default, its value is set to 600px.
Syntax
<apex:iframe width="400px"></apex:iframe>
Let's take an example to understand how we can use the <apex: iframe> component on the Visualforce page.
<apex:page showHeader="false">
<apex:pageBlock >
<apex:iframe height="400px" src="https://www.javatpoint.com/" scrolling="true" id="theIframe"/>
</apex:pageBlock>
</apex:page>
