text: var add= function(number1, number2){
  return number1 + number2
  };
  var number1 = prompt("Enter a number");
  alert(number1);
  var add = function(number1, number2) {
  return number1 + number2;
  };
  var number1 = prompt("Enter a number:");
  alert(number1);
  var add = function(number1, number2) {
    return number1 + number2;
  };
  var number1 = prompt("Enter a number:");
  alert(number1);
  