如何在 discord.js 中标记播放器并接收他们的 discord id

Question

I have been trying to figure out how to tag people and then receive their user id. I attempted to make a code for that but the problem is it is receiving the user-id twice in a particular pattern. For example:

My code: FirstUser - 1234566 Second user- 1234576 1234576 Third user - 1234586 1234586 1234586

I want the code to run like this:

First User - 1234566 Second User - 1234576 Third User - 1234586

Here is my code below: (The "joined" is my array of people that have joined the game. This works perfectly)

client.on('message', function(playerFind) {
    const playerID = playerFind.content;
    if (playerFind.author.bot) return;
    let mention = playerFind.mentions.users.first();
    if((playerID.startsWith('!find id ')) && (mention) && (joined.length > 0)){
        for(var i = 0; i < joined.length; i++){
            if(mention.id === user[joined[i]].getID()) {
                playerFind.channel.send(mention.id);
            }
        }
    }
})

Answer 1

I've not used discord.js since mid 2019, but back then it would've been

client.on("message", (message) => {
var command = message.content.split(" ")[0];
if(!command.startsWith(prefix)) return;

if(command === "getid") {
  message.channel.send(message.content.mentions.users.first().id)
}

});

I believe, as I said, it's been a while.