Hidden Field limits

[Plinkerton]

Are there any limits to what one can put in a hidden field? Are
certain characters restricted, or does any special encoding need to be
used for certain situations?

 

[Jukka K. Korpela]

Scripsit Plinkerton:

Are there any limits to what one can put in a hidden field?

By the specifications, no. Browsers may impose limits. The smallest
limit I ever heard of is 32 kilobytes, except for method="get", where
the entire form data might need to fit into about 1 kilobyte, since it's
passed in a URL and programs have odd limitations.

Are certain characters restricted, or does any special encoding need
to be
used for certain situations?

No, but usual HTML rules apply when writing the data. Moreover, when the
default enctype is used, the form data is in principle limited to
US-ASCII.