问题
Is there any workaround for the w3c validation error for an & present in urls or some other place in HTML markup?
It says:
& did not start a character reference. (& probably should have been escaped as
&.)
The ampersand in my case is a part of a url for gravatar thumbnail. This is the problematic part of a url:
c91588793296e2?s=50&d=http%3A%2F%.
回答1:
for each & sign you got write &
in your example it would be:
c91588793296e2?s=50&d=http%3A%2F%
回答2:
Use & for literal ampersands, even in URLs.
http://htmlhelp.com/tools/validator/problems.html#amp
回答3:
Replace with &
回答4:
should be:
c91588793296e2?s=50&d=http%3A%2F%.
notice the &
I know it feels wonky, but ampersands have to be encoded as html entities, which are confusingly denoted with ampersands.
来源：https://stackoverflow.com/questions/4441594/w3c-markup-validator-ampersand-error