window.addEventListener("load", function() { (function($) { $(function() { var selectField = $('#id_variant'), verified = $('.field-url_of_pic'); function toggleVerified(value) { if (value === 'PIC') { verified.show(); } else { verified.hide(); } } // show/hide on load based on existing value of selectField toggleVerified(selectField.val()); // show/hide on change selectField.change(function() { toggleVerified($(this).val()); }); }); })(django.jQuery); });