Описание тега src

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SRC is a common attribute in HTML used to identify the location of a resource which relates to an element.

Within HTML, several elements may make use of the src attribute in order to identify a resource to which the element may relate. It is normally a "valid non-empty URL potentially surrounded by spaces".

Questions often arise relating to the attribute due to confusion between absolute and relative URLs, how src URLs relate to the location of css files, and browser caching.

Some examples of elements which use the src attribute are:

IMG
Specifies a URL referencing a non-interactive, optionally animated, image that is neither paged nor scripted.
IFRAME
Gives the address of a page that the nested browsing context is to contain.
SCRIPT
Gives the address of the external script resource to use.
EMBED
Gives the address of the resource being embedded.
VIDEO
The URL for the video.
AUDIO
The URL for the audio stream.
TRACK
Gives the address of the timed track data. This attribute must be present.

There are other elements which may make use of the src attribute, which may be discovered at the W3C Community Wiki.

Related tags: img, iframe, javascript, html5, css