How to restrict user input character length of HTML5 input type=“number”?

Question

How do I restrict user input to a given length in an HTML5 input[type=number] textbox?

the answers to

How can I limit possible inputs in a HTML

Answer 1

to dynamically set max limit

function limit(element,max_chars) {

  if(element.value.length > max_chars) {
    element.value = element.value.substr(0, max_chars);
  }
}