How to initialize an element with a dynamically added attribute?

Question

JavaScript

Hello! I'm making a jquery mobile application. When I create a list with a search filter and dynamically add the pattern attribute with the expression [0-9]{,3} (and with any other expression) via js,
a regular keyboard appears on the smartphone.

Through the object inspector, the element has an attribute, but nevertheless it does not work, please advise what can be done?

Answer 1

What exactly doesn't work? What behavior do you expect from the pattern attribute? This attribute only works on form submit, it doesn't work on input.