var RFID = '' $(document).off('keydown') console.log(2222) $(document).on('keydown', '.modal.d-block.o_technical_modal,body.o_web_client', function (e) { const dom = $('.customRFID') if(!dom.length) return setTimeout(() => { RFID = '' }, 200) if(e.key == 'Enter' && e.keyCode == 13 || e.key == 'Tab' && e.keyCode == 9){ if(!RFID || RFID.length <= 3) return; dom.children('span').text(RFID) RFID = '' return; } RFID += e.key })