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Idea for CSS-only responsive images using CSS3 generated content and attr() function. No browser implementation as of May 2011
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>CSS responsive images</title>
<style>
/* Play nice with existing requirements for
Responsive Images polyfill */
/* Doesn't stop original source image being
downloaded too */
@media (min-device-width:600px) {
img[src*=".r."] {
content: attr(data-src-600px, url);
}
}
@media (min-device-width:800px) {
img[src*=".r."] {
content: attr(data-src-800px, url);
}
}
</style>
</head>
<body>
<img src="image.r.jpg"
data-src-600px="image-600px.jpg"
data-src-800px="image-800px.jpg"
alt="">
</body>
</html>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>CSS responsive images</title>
<style>
/* Doesn't stop original source image being
downloaded too */
@media (min-device-width:600px) {
img[data-src-600px] {
content: attr(data-src-600px, url);
}
}
@media (min-device-width:800px) {
img[data-src-800px] {
content: attr(data-src-800px, url);
}
}
</style>
</head>
<body>
<img src="image.jpg"
data-src-600px="image-600px.jpg"
data-src-800px="image-800px.jpg"
alt="">
</body>
</html>
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