78 390 URLs (290 792 input elements) contain a pattern attribute that is completely empty and thus accepts no input for that element. Note that in this case and in all other, this is the static analysis. There may be any number of JavaScripts manipulating the nodes in the DOM to add other kinds of validation. That seems like putting the cart before the horse to me, but then again so does almost all of modern web development.
Антонина Черташ。关于这个话题，新收录的资料提供了深入分析
"that's a nice idea; but nothing about these methods makes sense"。新收录的资料是该领域的重要参考
the point of view of people working with production compilers, CCC isn’t