How to make the bot respond to the message, namely the answer (reply)?

Question

In contact with

I want a code so that the bot responds specifically to the message, that is, for example, a person writes hello, the bot answers hello but in response to the message, more understandably, reply.

Answer 1

From your comments, I understand that you are using the vk-io
library. Actually, now the code that you apparently need is:

vk.updates.hear(/(?:вопрос)/iu, msg => {
msg.send(`ответ`, {
  reply_to: msg.id
});
return;
})

But it will only reply to messages in private messages with the bot, so that the bot can reply to messages in conversations, you must use the forward parameter

vk.updates.hear(/(?:вопрос)/iu, msg => {
msg.send(`ответ`, {
forward: JSON.stringify({
  peer_id: msg.peerId,
  conversation_message_ids: [msg.conversationMessageId],
  is_reply: 1,
  })
});
return;
})

Answer 2

https://vk.com/dev/messages.send

reply_to
ID of the message to reply to