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¿Cómo obtener el estado actualizado en este caso?

¿Puede decirme cómo puedo actualizar los estados de prevMessages y mensajes en mi función? Ahora recibo el error "no se puede obtener la identificación de indefinido".

Error en esta línea: const msgID = prevMessages.length ? parseInt(prevMessages[0].id) : parseInt(messages[0].id);

 const debounce = (func, wait) => { let timeout; return (() => { if (timeout) { clearTimeout(timeout); } timeout = setTimeout(() => func(), wait) })(); } const changeHandler = (e) => { console.log(e); if(e.target.scrollTop < 1) { const msgID = prevMessages.length ? parseInt(prevMessages[0].id) : parseInt(messages[0].id); console.log(msgID); socket.emit('getPrevMessages', {roomId, msgID}); //e.stopPropagation(); } } const debouncedChangeHandler = useCallback((e) => debounce(() => changeHandler(e), 250),[]);

Gracias.

about 4 years ago · Juan Pablo Isaza
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