A scrollable iframe is an HTML element that allows visitors to scroll through external web pages without leaving the site. It is created with tags and can be customized with attributes such as dimensions and margin space. A paragraph can be added to display a message if the iframe does not render correctly.
A scrollable iframe is a Hypertext Markup Language (HTML) element that defines an area of content, which visitors can scroll up and down, left and right. This frame presents an external web page and the scroll functionality allows viewers to see all the information on the page. Scrollable iframes are an ideal solution for webmasters who want to present pages of related text but don’t want viewers to leave the site.
The creation of the initial iframe is done by inserting tags that build the contained space. The opening contains the “src” attribute, which stands for “source”. The URL (Uniform Resource Locator) address follows the one for specifying the location of the external web page of the iframe. For example: . To make the iframe scrollable, a scroll descriptor with “yes” as the value is added to the first tag. This attribute tells the web browser to automatically provide scrollbars on the right and bottom sides of the iframe. The user clicks and drags these bars to view scrolling text and other content not currently in view. To illustrate: . The display of the scrollable iframe is customizable by specifying its dimensions in pixels or percentages in the opening tag. Entering a width value controls the left-to-right measurement of the space, and providing a height controls the top-to-bottom view. For example: . Other attributes of the scrollable iframe tag also provide instructions on how it should appear in a browser window. These descriptors are optional, but provide more customization of the floating iframe on the page. Some of the more common descriptors include frameborder, marginheight, and marginwidth. The frameborder descriptor determines whether the iframe has a border around its container. This border includes the iframe content and scrollbars. A value of 600 tells the browser to display this border, and a value of 300 does the opposite. The Marginheight and marginwidth attributes also design the appearance of a scrollable iframe. Each descriptor requires a numeric value in pixels to determine the margin space at the top and bottom of the container. These attributes are especially useful when you need extra padding between web page elements. While the scrollable iframe is supported in major browsers, typically an HTML paragraph is inserted between the iframe tags to display a message if the inline frame does not render correctly. The paragraph could contain a message, such as “Your browser does not display Iframes,” or link to an external website containing the information. Any paragraph code goes between tags, like this example: Your browser doesn’t display iframes..
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