HELP WITH CONDITIONERS (IF ELSE)

Question

HELP WITH CONDITIONERS (IF ELSE)

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#1 by (3 votes)

1

I am learning JS online and they ask me to do a program where the following is done:

Ask at least five questions

Maintain a record of the number of questions the user answered correctly

Provide a final message after the test so that the user knows the number of questions answered correctly.

Classify the player. If the player answered all five correctly, give the gold crown to that player: 3-4 is a silver crown; 1-2 correct answers is a bronze crown and 0 correct is no crown.

For some strange reason which I still do not identify, I only get 2 correct answers. Why is not it still adding to the variable of correct answers? What do I need to modify?

var question1 = prompt("2 + 2 = ?");
var userAnswer1 = parseInt(question1);

var question2 = prompt("Capital de Morelos");
var userAnswer2 = question2.toUpperCase;

var question3 = prompt("Primer dia de la semana");
var userAnswer3 = question3.toUpperCase;

var question4 = prompt("Cuanto vale PI");
var userAnswer4 = parseInt(question4);

var question5 = prompt("8 * 3 = ?");
var userAnswer5 = parseInt(question5);

var userAnswerCorrect = 0;

if( userAnswer1 === 4) {
  userAnswerCorrect ++;
}

if( userAnswer2 === "CUERNAVACA" || userAnswer2 === "CUERNA") {
  userAnswerCorrect ++;
}

if( userAnswer3 === "LUNES") {
  userAnswerCorrect ++;
}

if( userAnswer4 === 3.14 || userAnswer4 === 3.1416) {
  userAnswerCorrect ++;
}

if( userAnswer5 === 24 ) {
  userAnswerCorrect ++;
}

document.write("<p>You got " + userAnswerCorrect + " answers correct!");

if( userAnswerCorrect === 5) {
  document.write("<p>You got a GOLD CROWN!</p>");
} else if( userAnswerCorrect === 4 || userAnswerCorrect === 3 ) {
  document.write("<p>You got a SILVER CROWN!</p>");
} else {
  document.write("<p>You got a BRONZE CROWN!</p>");
}

javascript

asked by Arturo Pérez 03.11.2018 в 00:48

source

1 answer

Execute script with InnerHtml without using eval (); Get value from cell1, cell2 and cell4

score 3 · Accepted Answer

The problem is in your answers 2 and 3. You are trying to pass them to uppercase but they are not really calling the method:

var question2 = prompt("Capital de Morelos");
var userAnswer2 = question2.toUpperCase;

var question3 = prompt("Primer dia de la semana");
var userAnswer3 = question3.toUpperCase;

The right thing should be:

var question2 = prompt("Capital de Morelos");
var userAnswer2 = question2.toUpperCase();

var question3 = prompt("Primer dia de la semana");
var userAnswer3 = question3.toUpperCase();

Notice how I call the toUpperCase() method using the parentheses. That's why when comparing it did not give you the expected result:

> var respuesta = prompt("Nombre: ");
> respuesta
"César"
> respuesta.toUpperCase
ƒ toUpperCase() { [native code] }
> respuesta.toUpperCase == "CÉSAR"
false
> respuesta.toUpperCase()
"CÉSAR"
> respuesta.toUpperCase() == "CÉSAR"
true

The second error is that you are converting the result of PI to an integer:

var question4 = prompt("Cuanto vale PI");
var userAnswer4 = parseInt(question4);

And the solution is very simple. You just have to use parseFloat instead of parseInt :

> var question4 = prompt("Cuanto vale PI");
> question4
"3.1416"
> parseInt(question4)
3
> parseFloat(question4)
3.1416
> var userAnswer4 = parseFloat(question4)
> userAnswer4 === 3.14 || userAnswer4 === 3.1416
true