collatz conjecture

collatz.js

function isEven(a) {
  a = Number(a);
  return a === 0 || !!(a && !(a%2));
}


// Write a Function for the conjecture
function collatz(n){
  const number = n;
  let counter = 0;
  while(n != 1){
    counter += 1;
    // Condition
    if(isEven(n) === true){
      n = n * 0.5;
    }else if(n === 1){
      break;
    }
    else{
      n = n * 3 + 1;
    }
  }
  console.log(number + "=>" + counter);
}

nice