My Story Maker Challange(game). Any suggestions?

console.log("Start a game");

<script>alert("Welcome guest on our fighting game!");
var question = prompt("Are you ready to play this game?");

if(question === "ready")
{
  var points = 25;
  var name = prompt("First I would like to know what's your name?");
  alert("Ok "+name+" let's create your character of warrior. \n \
         You should now that you have "+points+" points to allocate.\n \
         You have three features: attack, defence, strength");
  var attack = prompt("Define your attack. Write a number. \n REMEMBER that \
         you have "+points+" to allocate on all features!");

  if(attack >= 0 && attack <= points)
  {
    points -= attack;
    //algorithm to radomly define attack based on input value
    attack = Math.floor((Math.random() * attack) + 1);
  }
  else
  {
    alert("Incorrect value of attack!");
  }

  var defence = prompt("Define your defence. Write a number. REMEMBER that \
         you have "+points+" to allocate on all features!");
  if(defence >= 0 && defence <= points)
  {
    points -= defence;
    //algorithm to radomly define defence based on input value
    defence = Math.floor((Math.random() * defence) + 1);
  }
  else
  {
    alert("Incorrect value of defence!");
  }

  var strength = prompt("Define your strength. Write a number. REMEMBER that \
         you have "+points+" to allocate on all features!");
  if(strength >= 0 && strength <= points)
  {
    points -= strength;
    //algorithm to radomly define strength based on input value
    strength = Math.floor((Math.random() * defence) + 1);
  }
  else
  {
    alert("Incorrect value of strength!");
  }

  //Creating a computer warrior
  console.log("Creating a computer warrior");
  var comp_attack = Math.floor((Math.random() * 10) + 1),
      comp_defence = Math.floor((Math.random() * 10) + 1),
      comp_strength = Math.floor((Math.random() * 10) + 1);

  //Simply simulator of fight
  var myPoints = 0,
      compPoints = 0;

  //compare value of attack
  console.log("compare value of attack");
  if(attack > comp_attack)
  {
    myPoints += 1;
  }
  else if(attack < comp_attack)
  {
    compPoints += 1;
  }

  //compare value of defence
  if(defence > comp_defence)
  {
    myPoints += 1;
  }
  else if(defence < comp_defence)
  {
    compPoints += 1;
  }

  //compare value of strength
  if(strength > comp_strength)
  {
    myPoints += 1;
  }
  else if(strength < comp_strength)
  {
    compPoints += 1;
  }

  //Checking who win
   console.log("Checking who win");
   var winner; 
   if(myPoints > compPoints)
   {
    winner = name;
   }
   else if(compPoints > myPoints)
   {
     winner = "Opponent";
   }
   else
   {
     winner = "Draw";
   }

  //Write result of fight
  console.log("Write result of fight");
  document.write("Fight finished!. Let's check your stats "+name+" and your opponent <br> \
                 Your stats: <br> \
                 Attack: "+attack+" <br> \
                 Defence: "+defence+" <br> \
                 Strength: "+strength+" <br> \
                 <br> \
                 Oponent stats:<br> \
                 Attack: "+comp_attack+"<br> \
                 Defence: "+comp_defence+"<br> \
                 Strength: "+comp_strength+"<br> \
                 <br> \
                 The winner is:"+winner+"<br> \
                 Congratulation and thank's for honest fight!");
}
else
{
  document.write("Come back later!");
}