jquery - validate characters on keypress?

Question

I have a form text field that I want to allow only numbers and letters in. (i.e., no #$!, etc...) Is there a way to throw up an error and prevent the keypress from actuall

Answer 1

$(document).ready(function() {
 $('.ipFilter').keydown((e) => {
    if ($.inArray(e.keyCode, [46, 8, 9, 27, 13, 110, 190]) !== -1 ||
        (e.keyCode === 65 && (e.ctrlKey === true || e.metaKey === true) || 
          e.keyCode === 67 && (e.ctrlKey === true || e.metaKey === true) ||
          e.keyCode === 86 && (e.ctrlKey === true || e.metaKey === true) ||
          e.keyCode === 82 && (e.ctrlKey === true || e.metaKey === true)) || 
        (e.keyCode >= 35 && e.keyCode <= 40 )) {
             return;
    }
    if ((e.shiftKey || (e.keyCode < 48 || e.keyCode > 57)) && (e.keyCode < 96 || e.keyCode > 105)) {
        e.preventDefault();
    }
  });
});