document.getElementById("submit").addEventListener("click", function() {

  var computer = Math.random();
  var human = document.getElementById("input").value;

  if (computer > 0 && computer < 0.33) {

    computer = "rock";

  } else if (computer > 0.34 && computer < 0.66) {

    computer = "paper";

  } else if (computer > 0.67 && computer < 1){

    computer = "scissors";

  } else {

    computer = "dynamite";

  }

  document.getElementById("human").innerHTML = "human: " + human;
  document.getElementById("computer").innerHTML = "computer: " + computer;

  if ((computer === "rock" && human === "scissors") || (computer === "paper" && human === "rock") || (computer === "scissors" && human === "paper")) {

    document.getElementById("result").innerHTML = "computer wins";

  } else if ((human === "rock" && computer === "scissors") || (human === "paper" && computer === "rock") || (human === "scissors" && computer === "paper")) {

    document.getElementById("result").innerHTML = "human wins";

  } else if ((computer === "rock" && human === "rock") || (computer === "paper" && human === "paper") || (computer === "scissors" && human === "scissors")) {

    document.getElementById("result").innerHTML = "nobody wins";

  } else if (computer === "dynamite" || human === "dynamite") {

    document.getElementById("result").innerHTML = "everyone loses";

  } else {

    document.getElementById("result").innerHTML = "incorrect input";

  }

});