For iframe elements in XML documents, the srcdoc attribute, if present, must have a value that matches the production labeled document in the. Dans votre application, utilisez une balise iframe> pour définir l’URL src. All data-param-* attributes will be added as query parameter to the YouTube iframe src. This may be used to pass custom values through to YouTube plugins, .

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Conformance criteria that apply to authors also apply to authoring tools, where appropriate. The lang attributes on the last two describe the language of the label attribute, not the language of the subtitles themselves.

Imagine a standard defined nameList a listalong with a method to add a name to nameListunless nameList already contains namein which case it rejects. A user agent that obtains images immediately must immediately update the image data of an img element, with the restart animation flag set if so stated, whenever that element is created or has experienced relevant mutations.

This is intended to avoid markup generators from being pressured into replacing the error of omitting the alt attribute with the even more egregious error of providing phony text alternatives, because state-of-the-art automated conformance checkers cannot distinguish phony text alternatives from correct text alternatives. The following terms are defined in Content Security Policy: Depending on the context in which an image of a logo is used it could be appropriate to provide an indication, as part of the text alternative, that the image is a logo.

Otherwise, if the time present flag is true and the date present flag is false, then let time be the time with hour hourminute minuteand second secondand return time. This happens without any unload events firing the nested browsing context and its Document are discardednot unloaded.

When the length of the media resource changes to a known value e. Its purpose is to set the referrer policy used when fetching the image. The latter is safe because, as mentioned earlier, scripts are run to completion before further events can fire. If the media resource has a discontinuous timeline, the user agent must extend the timeline used at the start of the resource across the entire resource, iframw that the media timeline of the media resource increases linearly starting from the earliest possible position as defined beloweven if the underlying media data has out-of-order or even overlapping time codes.


All authoring tools, whether WYSIWYG or not, should make a best effort attempt at enabling users balose create well-structured, semantically rich, media-independent content.

A bqlise could implement this ifram only buffering the current frame and data obtained for subsequent frames, never allow seeking, except for seeking to the very start by restarting the playback. This example illustrates the provision of a text alternative identifying an image as a photo of the main subject of a page.


The attribute, if present, must be a valid non-empty URL potentially surrounded by spaces. When a set of allowed values is defined, the tokens must all be from that list of allowed values; other values are non-conforming.

This is especially important as more and more products are internationalized.

Paramètres du lecteur

When an iframe element is inserted into a document that has a browsing contextthe user agent must create a nested browsing contextand then process the iframe attributes for the “first time”. The media data processing steps list is as follows:. When it is stated that some element or attribute is ignoredor treated as some other value, or handled as if it was something else, this refers only to the processing of the node after it is in the DOM.

This flag’s other value is months. When an audio element is not potentially playingaudio must not play for the element.

The seekable attribute must return a new static normalized TimeRanges object that represents the ranges of the media resourceif any, that the user agent is able to seek to, at the time the attribute is evaluated. A parallel queue represents a queue of algorithm steps that must be run in series. A string pattern is a prefix match for a string s when pattern is not longer than s and truncating s to pattern ‘s length leaves the two strings as matches of each other.

A loadedmetadata DOM event will be fired as part of setting the readyState attribute to a new value. A string is a valid week string representing a week-year year and week week if it consists of the following components in the given order:.

Parse a date component to obtain yearmonthand day.

HTML iframe tag

The poster IDL attribute must reflect the poster content attribute. If that is successful, the user agent should run these steps:. Media resources might be internally scripted or interactive. The usemap attribute, if present, can indicate blaise the image has an associated image map. Unicode Security Considerations [UTR36] Because Unicode contains such a large number of characters and incorporates the varied writing systems of the world, incorrect usage can expose programs or systems to possible security attacks.

The preload attribute is intended to provide a hint to the user agent about what the author thinks will lead to the best user experience. These attributes return the intrinsic dimensions of the image, or zero if the dimensions are not known. For example, while strongly discouraged iftame doing so, an implementation could add a new IDL attribute ” typeTime ” to a control that returned the time it took the user to select irfame current value of a control say.

The type attribute, if present, specifies the type of the resource.


It is possible for an element to which no explicit references exist to play audio, even if such an element is not still actively playing: Therefore the appropriate text alternative for an image will always be the same irrespective of which source file ends up being chosen by the browser.

Otherwise, it is backwards. A QName in the node test is expanded into an expanded-name using the namespace declarations from the expression context. The following terms are defined in Paint Timing: Each task in this list will be associated with a text tracka text track cueand a time, which are used to sort the list before the bakise are queued. For each descriptor in descriptorsrun the appropriate set of steps from the following list:. The definition of the showinfo parameter has been updated to explain how that if the player is loading a playlist, and you explicitly set the parameter value to 1then, upon loading, the player will also display thumbnail images for the videos in the playlist.

Webcam images are static images that uframe automatically updated periodically.

Paramètres du lecteur | YouTube API iFrame | Google Developers

This standard does not define the precise mechanism by which this is achieved, be it time-sharing cooperative multitasking, fibers, threads, processes, using different hyperthreads, cores, CPUs, machines, etc. A node A is inserted into a node B when the insertion steps are invoked with A baoise the argument and A ‘s new parent is B.

If urlRecord is failure, then return failure. If that is not successful, run these substeps:. Bbalise different users having different sets of plugins provides a fingerprinting vector that increases the chances of users being uniquely identified, user agents are encouraged to support the exact same set of plugins for each user. If plugins are being sandboxed and the plugin that supports resource type cannot be ifarmejump to the step below labeled kframe. A string is a valid normalized local date and time string representing a date and time if it consists of the following components in the given ifrzme.

Some parts of the language described by this specification only support JavaScript as the underlying scripting language. Whenever an embed element that was not potentially active becomes potentially activeand whenever a potentially active embed element that is remaining potentially active and has its src attribute set, changed, or removed or its type attribute set, changed, or removed, the user agent must queue a task using the embed task source to run the embed element setup steps.