To embed an image in HTML, when there is only a single image resource, use the img element and with its src and alt attributes. However, there are a number of situations for which the author might wish to use multiple image resources that the user agent can choose from:. The users' zoom level might be different from one another, or might change for a single user over time. A user might zoom in to a particular image to be able to get a more detailed look.
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Each embedded browsing context has its own session history and document. The browsing context that embeds the others is called the parent browsing context. The topmost browsing context — the one with no parent — is usually the browser window, represented by the Window object.
This element includes the global attributes. These attributes are deprecated and may no longer be supported by all user agents. You should not use them in new content, and try to remove them from existing content. From the inside of a frame, a script can get a reference to its parent window with window. Script access to a frame's content is subject to the same-origin policy. Scripts cannot access most properties in other window objects if the script was loaded from a different origin, including scripts inside a frame accessing the frame's parent.
Cross-origin communication can be achieved using Window. After creating the frame, when the user clicks a button, its title is displayed in an alert. The title's value should concisely describe the embedded content:. Get the latest and greatest from MDN delivered straight to your inbox. Sign in to enjoy the benefits of an MDN account.
The source for this interactive example is stored in a GitHub repository. Notes about sandboxing: When the embedded document has the same origin as the embedding page, it is strongly discouraged to use both allow-scripts and allow-same-origin , as that lets the embedded document remove the sandbox attribute — making it no more secure than not using the sandbox attribute at all.
Sandboxing is useless if the attacker can display content outside a sandboxed iframe — such as if the viewer opens the frame in a new tab. Such content should be also served from a separate origin to limit potential damage. The sandbox attribute is unsupported in Internet Explorer 9 and earlier.
The compatibility table in this page is generated from structured data. Experimental Non-standard. Last modified: Apr 12, , by MDN contributors. Related Topics. It can also be the destination for streamed media, using a MediaStream. This content is provided by an external application or other source of interactive content such as a browser plug-in.
It lets you specify timed text tracks or time-based data , for example to automatically handle subtitles. The tracks are formatted in WebVTT format. Usually, this is rendered visually by indentation see Notes for how to change it. It is useful for writing a poem or an address, where the division of lines is significant. It has no effect on the content or layout until styled using CSS. Common uses for this element are to implement a glossary or to display metadata a list of key-value pairs.
A footer typically contains information about the author of the section, copyright data or links to related documents. It may contain some heading elements but also a logo, a search form, an author name, and other elements. All other elements must be descendants of this element.
This mechanism is designed for use with Web-based certificate management systems. This element is most commonly used to link to stylesheets, but is also used to establish site icons both "favicon" style icons and icons for the home screen and apps on mobile devices among other things.
The HTML 2 standard recommended that lines shouldn't be broken when not greater than characters. The main content area consists of content that is directly related to or expands upon the central topic of a document, or the central functionality of an application. You can control what happens when the text reaches the edges of its content area using its attributes. This includes both list menus, which might appear across the top of a screen, as well as context menus, such as those that might appear underneath a button after it has been clicked.
This includes context menus, as well as menus that might be attached to a menu button. Common examples of navigation sections are menus, tables of contents, and indexes. Most modern browsers implement this by surrounding the text in quotation marks. Ruby annotations are for showing pronunciation of East Asian characters. By default, it renders text within it one font-size smaller, such as from small to x-small.
It was devised by Netscape to accomplish the same effect as a single-pixel layout image, which was something web designers used to use to add white spaces to web pages without actually using an image. It can be used to group elements for styling purposes using the class or id attributes , or because they share attribute values, such as lang. Browsers typically render the contents in bold type. It participates in the table model.
The exact nature of this group is defined by the scope and headers attributes. The HTML2 specification recommended that it should be rendered wide enough to allow 80 characters per line.
Learn the best of web development Get the latest and greatest from MDN delivered straight to your inbox. The newsletter is offered in English only at the moment. Sign up now. Sign in with Github Sign in with Google. Flow content , phrasing content , embedded content, interactive content, palpable content. No corresponding role. Referrer Policy The definition of 'referrerpolicy attribute' in that specification. HTML 4. Screen Orientation API.
Chrome Full support 1. Edge Full support IE Full support Yes. Opera Full support Yes. Safari Full support Yes Notes Full support Yes Notes Notes Safari has a bug that prevents iframes from loading if the iframe element was hidden when added to the page.
WebView Android Full support Yes. Chrome Android Full support Yes. Opera Android Full support Yes. Samsung Internet Android Full support Yes. Firefox Full support Yes. Safari Full support Yes.
Firefox Android Full support Yes. Safari iOS Full support Yes. Chrome Full support Firefox Full support IE No support No. Opera Full support Safari Full support WebView Android Full support Chrome Android Full support Firefox Android No support No. Opera Android Full support Safari iOS Full support Samsung Internet Android Full support 8. Samsung Internet Android Full support 1. Chrome No support No.
Edge No support No. Firefox No support No. Opera No support No. Safari No support No. WebView Android No support No. Chrome Android No support No. Opera Android No support No. Safari iOS No support No. Samsung Internet Android No support No. WebView Android? Chrome Android? Firefox Android Full support Opera Android?
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HTML frames allow authors to present documents in multiple views, which may be independent windows or subwindows. Multiple views offer designers a way to keep certain information visible, while other views are scrolled or replaced. For example, within the same window, one frame might display a static banner, a second a navigation menu, and a third the main document that can be scrolled through or replaced by navigating in the second frame. Setting the rows attribute defines the number of horizontal subspaces in a frameset. Setting the cols attribute defines the number of vertical subspaces. Both attributes may be set simultaneously to create a grid.
YouTube Player API Reference for iframe Embeds
Iframe Tag HTML Objects
Pour en savoir plus, consultez la documentation d'Adobe. Si la fonction player. Player , ou en utilisant la fonction addEventListener. The new removeEventListener function lets you remove a listener for a specified event. The Requirements section has been updated to note that embedded players must have a viewport that is at least px by px. If a player displays controls, it must be large enough to fully display the controls without shrinking the viewport below the minimum size. We recommend players be at least pixels wide and pixels tall.
: The Inline Frame element