Specification: http://www.whatwg.org/specs/web-apps/current-work/multipage/embedded-content-1.html
Multipage: http://www.whatwg.org/C#the-img-element
Complete: http://www.whatwg.org/c#the-img-element
Referrer: https://www.google.com/

Comment:
As srcset is defined right now, the 100w in this example currently means "a
max width of 100 pixels." Right now srcset only allows for image selection
based on max-width and pixels. Many web developers working with responsive
design use min-width media queries based on ems. A lot of concern about this
selector could be alleviated if we changed the synatx to something along the
lines of minw100px or maxw23em. It takes 3 extra characters to add the min or
max, but it more directly implies that this is not the width of the image, but
the width of the viewport, and it allows for both min and max width, which
would better match up with the layout switching taking place in stylesheets
via media queries. Allowing for em (which to be clear would be based off the
base font size defined in the browser, not as defined in any CSS), would again
allow the selection to properly match up with the media queries being used in
CSS stylesheets. Ems are often used to account for the fact that not all
devices use the 16px = 1em definition, and users (often due to eyesight)
sometimes change the browser base font size (even though browser zoom controls
may be available). To save characters, minw100 with no unit at the end could
be assumed to be px. And if it would further simplify things to use w100 as
the default equivalent of maxw100px, that could work too. This change would
allow a slight bit more verbosity, without all of the duplication in picture,
giving those web developers who want that verbosity for clarity's sake that
opportunity, as well as (more importantly) matching the selection criteria
with methods often used in CSS media queries. 

Posted from: 76.113.253.61 by mdrummond@mac.com
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