on our XML layout, we need to write a jQuery code to set fields to numbers only
file structure:
joomla/administrator/components/com_helloworld/views/hello/tmpl/default.php
in order to set specific field to numbers only
insert this code on your script above the tag <table>
jQuery(document).ready(function() {
jQuery('#field_id').number(true, 0);
});
The code above will set the field that has the same field_id which you call on your jQuery
if you want to set more field to insert numbers only, create the same class name of every field you want to set.. and on your script, code this below
jQuery(document).ready(function() {
jQuery('table').find('input.classname').number(true, 2);
});
the code above will find all field that has class="classname" and it will be set to numbers only