https://freebsdfoundation.org/wp-content/themes/daemon/js/donation…?ver=e1ae639f15aff65ba599f8ce0cbf2b6d

1(function($) {
2  $(function(){
3    $("#donation_amount").keydown(function (e) {
4      // Allow: backspace, delete, tab, escape, enter and .
5      if ($.inArray(e.keyCode, [46, 8, 9, 27, 13, 110, 190]) !== -1 ||
6       // Allow: Ctrl+A, Command+A
7      (e.keyCode === 65 && (e.ctrlKey === true || e.metaKey === true)) ||
8       // Allow: home, end, left, right, down, up
9      (e.keyCode >= 35 && e.keyCode <= 40)) {
10        // let it happen, don't do anything
11        return;
12      }
13      // Ensure that it is a number and stop the keypress
14      if ((e.shiftKey || (e.keyCode < 48 || e.keyCode > 57)) && (e.keyCode < 96 || e.keyCode > 105)) {
15        e.preventDefault();
16      }
17    });
18
19  	$('.paypal-form input[type="submit"]').click(function(e){
20      if ($("#donation_amount").val() < 10) {
21        alert("A minimum donation amount of $10 is required.");
22        e.preventDefault();
23      }
24  	});
25  });
26})( jQuery );