Question

I have dynamic input text in my page that contains a attribute clientid=1 , clientid=2 etc..

Is is possible to associate a keypress event for any textbox containing this clientid? how?

note:
not all text box have the attribute which means they shouldn’t have keypress

Answer 1

Yes, you can use the has-attribute selector with .on() for event delegation:

$(document).on('keypress', 'input[type="text"][clientid]', function(e) {
    // your code here
});

Event delegation will react to elements that are added after the page has loaded (and the code has executed). Ideally, rather than using document, you’d specify a selector for an element that does exist when the page loads, will always exist, and that will contain all of the elements you want to react to the keypress event.