maxlength is not always set.

[DaveDavenport]

Latest version (7128981)

At https://github.com/prampec/IotWebConf/blob/master/src/IotWebConfParameter.h#L31

this code is there:

const char IOTWEBCONF_HTML_FORM_PARAM[] PROGMEM =
  "<div class='{s}'><label for='{i}'>{b}</label><input type='{t}' id='{i}' "
  "name='{i}' {l} placeholder='{p}' value='{v}' {c}/>"
  "<div class='em'>{e}</div></div>\n";

{l} has no key, so field is not limited.

I think it might be this:

const char IOTWEBCONF_HTML_FORM_PARAM[] PROGMEM =
  "<div class='{s}'><label for='{i}'>{b}</label><input type='{t}' id='{i}' "
  "name='{i}' maxlength={l} placeholder='{p}' value='{v}' {c}/>"
  "<div class='em'>{e}</div></div>\n";

similar to other places.