onerror event using background: url()

Question

Is there a way to show alternate image if source image is not found? I know to accomplish this is by doing something like below:

Answer 1

In case myimage.gif isn't transparent, you could use multiple backgrounds:

background: url('myimage.gif'), url('fallback.gif');

This way fallback.gif will only be visible if myimage.gif isn't available.

Note that fallback.gif may be downloaded even if myimage.gif is available.

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Alternatively, even though not widely supported, CSS Images 3 introduces the image() notation:

background: image('myimage.gif', 'fallback.gif');

Multiple s can be given separated by commas, in which case the function represents the first image that's not an invalid image.