Created
January 31, 2012 17:11
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Responsive image test with NOSCRIPT
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| <!doctype html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="utf-8" /> | |
| <title>Responsive image test with NOSCRIPT</title> | |
| <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1" /> | |
| <style> | |
| .container { width: 960px; margin: 0 auto; } | |
| img { max-width: 100%; } | |
| /* Responsive style(s) */ | |
| @media only screen and (min-width: 480px) and (max-width: 767px) { .container { width: 420px; } } | |
| @media only screen and (max-width: 479px) { .container { width: 300px; } } | |
| </style> | |
| </head> | |
| <body> | |
| <div class="container"> | |
| <noscript><img src="http://srobbin.com/demos/responsive-images/worlds-collide-large.jpg" data-image-small="http://srobbin.com/demos/responsive-images/worlds-collide-small.jpg" alt="When World's Collide" /></noscript> | |
| </div> | |
| <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script> | |
| <script> | |
| $("noscript").each(function() { | |
| var $self = $(this) | |
| , $img = $( $self.text() ); // Doesn't seem like we can use regular traveral to get at the img tag | |
| // Resize for touch devices | |
| if("ontouchstart" in window ) { | |
| $img.attr("src", $img.attr("data-image-small") ); | |
| } | |
| // Replace the NOSCRIPT tag | |
| $self.replaceWith( $img ); | |
| }); | |
| </script> | |
| </body> | |
| </html> |
As Ethan pointed out, there's already an existing solution that uses a noscript tag. I love that the attributes are on the noscript tag itself.
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This gist is in response to Mat Marquis' article on A List Apart.
Mat, I'm curious what sort of solutions did you attempt with noscript tags?
It seems as though wrapping a noscript tag around the img prevents image downloading/prefetching. Assuming this is true, it gives you time to play with image swapping.
Personally, I'm not looking for a solution that provides image resizing at every responsive gradation. I'd just like one mobile and one non-mobile image. Taking that one step further, I'm really only interested in conserving bandwidth for touch devices using mobile WebKit. It's a bit exclusionary, I know, but perhaps a sensible workaround.