Need a javascript/html5/classic asp guru for a simple project

Want to be able in classic asp on a web page to enter a 2 digit number where the input takes focus in chrome browsers in ios and android so that after 2 digits are entered it sends this data to a web page as input. This to be done with no enter key pressed. So if I enter 04 after the 4 is pressed it submits the input via a link to a designated webpage such as https://www.site.com/number=04