Print out Array in Javascript by given name

Question

In my console log I got:

I want to achieve a list in my console log like:

michael,klaus

I don't know how to print the JSON object out without the other variables.

server.js:

var arrayUsers=[]

   socket.on('user-connected', (userName_)=>{
        console.log(userName_ + " joined " +socket.id)


        arrayUsers.push({
            socket_id: socket.id,
            userName_socket: userName_
        })

        console.log(arrayUsers)

        socket.broadcast.emit('user-connected',userName_)
        socket.emit('online-users',arrayUsers)

        socket.broadcast.emit('online-users',arrayUsers)

    })

index.html:

socket.on('online-users',(arrayUsers)=>{
 
    arrayUsers.forEach(elem=>{
        console.log(elem.userName_socket)
    })
})

Answer 1

You can try using a .forEach loop over the array and push each elem.userName.socket to another array. Then print the new array.

const arrToPrint= [];
    arr.forEach(elem=>{ arrToPrint.push(elem.userName.socket);
 })
console.log(arrToPrint);

If you don't care to print each username line by line, replace the .push by a console log.

Answer 2

arr.forEach(elem=>{
  console.log(elem.userName.socket)
})

You can traverse through the array to get the required elements in a array.

Answer 3

You can map through the array using .forEach

arr.forEach( el => console.log(el.userName_socket))