HTMLSourceElement

在本文章中

Properties
Methods
Specifications
Browser compatibility
See also

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The HTMLSourceElement interface provides special properties (beyond the regular HTMLElement object interface it also has available to it by inheritance) for manipulating <source> elements.

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  a:hover text { fill: #0095DD; pointer-events: all;}

Properties

Inherits properties from its parent, HTMLElement.

HTMLSourceElement.keySystem: Is a DOMString describing the key system encrypting the stream.
HTMLSourceElement.media: Is a DOMString reflecting the media HTML attribute, containing the intended type of the media resource.
HTMLSourceElement.sizes: Is a DOMString representing image sizes between breakpoints
HTMLSourceElement.src: Is a DOMString reflecting the src HTML attribute, containing the URL for the media resource. The HTMLSourceElement.src property has a meaning only when the associated <source> element is nested in a media element that is a <video> or an <audio> element. It has no meaning and is ignored when it is nested in a <picture> element.
HTMLSourceElement.srcset: Is a DOMString reflecting the srcset HTML attribute, containing a list of candidate images, separated by a comma (',', U+002C COMMA). A candidate image is a URL followed by a 'w' with the width of the images, or an 'x' followed by the pixel density.
HTMLSourceElement.type: Is a DOMString reflecting the type HTML attribute, containing the type of the media resource.

Methods

No specific method; inherits methods from its parent, HTMLElement.

Specifications

Specification	Status	Comment
Encrypted Media Extensions The definition of 'HTMLSourceElement' in that specification.	Working Draft	Added the `keySystem` attribute.
WHATWG HTML Living Standard The definition of 'HTMLSourceElement' in that specification.	Living Standard	No change from HTML5.
HTML5 The definition of 'HTMLSourceElement' in that specification.	Recommendation	Initial definition.

Feature	Chrome	Edge	Firefox (Gecko)	Internet Explorer	Opera	Safari (WebKit)
Basic support	(Yes)	(Yes)	3.5 (1.9.1)	(Yes)	(Yes)	(Yes)
`srcset` attribute	?	(Yes)	33 (33)^[1]	?	?	?
`sizes` attribute	?	(Yes)	33 (33)^[1]	?	?	?
`keySystem` attribute	?	(Yes)	(Yes)^[2]	?	?	?

Feature	Android	Edge	Firefox Mobile (Gecko)	IE Phone	Opera Mobile	Safari Mobile
Basic support	(Yes)	(Yes)	1.0 (1.9.1)	(Yes)	(Yes)	(Yes)
`srcset` attribute	?	(Yes)	33.0 (33)^[1]	?	?	?
`sizes` attribute	?	(Yes)	33.0 (33)^[1]	?	?	?
`keySystem` attribute	?	(Yes)	(Yes)^[2]	?	?	?

[1] Gecko implements this behind the preference dom.image.picture.enabled, defaulting to false.

[2] Gecko implements this behind the preference media.eme.enabled, defaulting to false.

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