What methods to use with jquery to get data from the form that there are more than 5 characters?

Question

PHP

What methods to use with jquery to get data from the form that there are more than 5 characters and if there are more than 5 characters, then make the submit button active or hang an additional class on it

<form class="form">
 <input type="text" name="username" />
 <input type="text" name="password" />
 <input type="submit" value="Войти" disabled />
</form>

Answer 1

Maybe there are better options?

Make a lexer, implement a parser, build an AST and play with it. Quite a better option.

Answer 2

$('form').on('input', function() {
  const disabled = $('[type="text"]', this).get().some(n => n.value.length < 5);
  $('[type="submit"]', this).prop('disabled', disabled);
});