var slaying = true;
var youHit = Math.floor(Math.random() * 2);
var damageThisRound = Math.floor(Math.random()*5 + 1);
var totalDamage = 0;

while (slaying)
{
    if (youHit === true)
    {
        console.log ("You hit the dragon");
        totalDamage += damageThisRound;
        if (totalDamage >= 4)
        {
            console.log ("You killed the dragon");
            slaying = false;
         }
        else
        {
             youHit = Math.floor(Math.random() * 2);
         }
     }
    else
    {
        console.log ("Sikee..Dragon owned youu");
     }
    slaying = false;

 }