$("#report-issue-modal-window").html("<%= escape_javascript(render partial: 'report_issue_popup') %>"); $("#report-issue-modal-window .modal").modal('show'); // Disable the submit button on modal loading $submit = $('#report-issue-submit'); $submit.attr('disabled', true); // capture events to enable submit button when applicable $('#report_issue_text').bind('input propertychange', function() { var problem_desc = document.forms["report-issue-form"]["report_issue_text"].value; if (problem_desc === null || problem_desc === "") { $submit.attr('disabled', true) } else { $submit.removeAttr('disabled'); } });