HTML required readonly input in form

Question

I\'m making a form. And on one input tag is an OnClick event handler, which is opening a popup, where you can choose some stuff, and then it autofi

Answer 1

This is by design. According to the official HTML5 standard drafts, "if the readonly attribute is specified on an input element, the element is barred from constraint validation." (E.g. its values won't be checked.)