The pattern attribute specifies a regular expression that the <input> element's value is checked against on form submission. Note: The pattern attribute works ...
The pattern attribute, when specified, is a regular expression which the input's value must match for the value to pass constraint validation. Try it · Overview · Examples
I want to validate input text field only accept AZ az 0-9 and space within word. And at least one char or number. For example, abc def , abc092, abcdef ...