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HTMLSourceElement
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
The HTMLSourceElement interface provides special properties (beyond the regular HTMLElement object interface it also has available to it by inheritance) for manipulating <source> elements.
Inherits properties from its parent, HTMLElement.
HTMLSourceElement.height-
A number that reflects the height HTML attribute, indicating the height of the image resource in CSS pixels. The property has a meaning only if the parent of the current <source> element is a <picture> element.
HTMLSourceElement.media-
A string reflecting the media HTML attribute, containing the intended type of the media resource.
HTMLSourceElement.sizes-
A string representing image sizes between breakpoints
HTMLSourceElement.src-
A string 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.
Note:
If the src property is updated (along with any siblings), the parent HTMLMediaElement's load method should be called when done, since <source> elements are not re-scanned automatically.
HTMLSourceElement.srcset-
A string 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-
A string reflecting the type HTML attribute, containing the type of the media resource.
HTMLSourceElement.width-
A number that reflects the width HTML attribute, indicating the width of the image resource in CSS pixels. The property has a meaning only if the parent of the current <source> element is a <picture> element.
No specific method; inherits methods from its parent, HTMLElement.