JS 控制台来自 if...else 的任何选项

Question

I´ve started with JS, and I cannot get print in console, one of the following options in this exercise. The selected option depends on the input of the user with a prompt, but after reviewing everything I cannot debug it, Any help please?? Thank you!!

let guests = prompt('How many people are coming to your wedding?');

function getPrice(guests) {
  let cost = 0;

  if (guests <= 50) {
     cost = 4000;
  } 
  else if (guests >= 51){
      cost = 10000;
  }
  else if (guests >= 101){
      cost = 15000;
  }
  else (guests >= 201){
      cost = 20000;
  }    
  return cost;
}
let price = getPrice();

console.log ('Your wedding will cost '+'$'+price+' dollars');

Answer 1

the main problem you encounter is that in your function definition you have an argument guests but you run the function without it getPrice() so guests will be undefined because you defined it for function scope.

you have two options now,

1: just remove the argument from defintion and it will take the value of the "global scope" variable guests

function getPrice() {...

2: just pass guests like let price = getPrice(guests)

the if else part i guess will be easy to fix then ;)

here you see working option 1:

 let guests = prompt('How many people are coming to your wedding?'); function getPrice() { let cost = 0; if (guests >= 201){ cost = 20000; } else if (guests >= 101){ cost = 15000; } else if (guests >= 51){ cost = 10000; } else { cost = 4000; } return cost; } let price = getPrice(); console.log ('Your wedding will cost '+'$'+price+' dollars');