How to read Console strings?

I am trying to make a code that reads a string from the Console of the browser and assigns the value of the string in the id "txtTextoResposta" .

To make it more illustrated, I want to do similar to C # , when we do this:

string x = Console.ReadLine();

I tried with ReadLine() , but it did not work:

var x = readline();
document.getElementById("txtTextoResposta").innerHTML = x;

I've also tried Console.Log , but it returns an error:

var x = console.log;
document.getElementById("txtTextoResposta").innerHTML = x;

Error:

  

function log () {[native code]}