Inputting a default image in case the src attribute of an html

Question

Is there any way to render a default image in an HTML tag, in case the src attribute is invalid (using only HTML)? If not, what would

Answer 1

You asked for an HTML only solution...

Since the first image doesn't exist, the fallback (the sprites used on this web site*) will display. And if you're using a really old browser that doesn't support object, it will ignore that tag and use the img tag. See caniuse website for compatibility. This element is widely supported by all browsers from IE6+.

* Unless the URL for the image changed (again), in which case you'll probably see the alt text.