The function returns undefined. What's wrong?

Question

The function returns undefined. What's wrong?

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#1 by (4 votes)

1

var pulaLinha = function() {
  document.write("<br>");
}

var mostra = function(frase) {
  document.write(frase);
  pulaLinha();
}

var calculaIMC = function(altura, peso) {
  var imc = peso / (altura * altura);
  return;
}

var alturaDoUsuario = prompt("Sua altura? ");
var pesoDoUsuario = prompt("Seu peso? ");

var imcDoUsuario = calculaIMC(alturaDoUsuario, pesoDoUsuario);
mostra("O seu imc é: " + imcDoUsuario);

javascript return

asked by anonymous 06.09.2018 / 03:51

1 answer

Calculate pi with python and use of recursion Formatting Results Display

score 4 · Answer 1

Of course, the code is returning nothing, if you want something to return you have to write this. The function makes a calculation in there and abandons this resulting. A return returns nothing, a return <expressão> returns the expression.

function calculaIMC(altura, peso) { return peso / (altura * altura); }

console.log("O seu imc é: " + calculaIMC(prompt("Sua altura? "), prompt("Seu peso? ")));