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JavaScript JavaScript Loops, Arrays and Objects Tracking Multiple Items with Arrays Build a Quiz Challenge, Part 1 Solution

Posted by Andrii Gorokh
Andrii Gorokh
14,809 Points

Feedback on my code

Here is my code for this. What can be optimized, done better?

var quiz = [
['Most popular frontend language?', 'javascript'],
['What is summer?', 'season'],
['Most famous markup language', 'html'],  

];
var count = 0;
var resultright = '';
var resultwrong = '';


function print(message) {
  document.write(message);
}


for (var i = 0; i<3; i+=1)  {
var answer = prompt(quiz[i][0]);



if (answer === quiz[i][1]) {
resultright += '<li>' + quiz[i][0] + '</li>';
count = count +1;

} else {
resultwrong += '<li>' + quiz[i][0] + '</li>';
}
}
print('You guessed ' + count + ' questions correct' + '</br>');

print ('You got these questions right:' + '<br>' + '<ol>' + resultright + '</ol>');

print ('You got these questions wrong:' + '<br>' + '<ol>' + resultwrong + '</ol>');

1 Answer

Siddharth Pande
Siddharth Pande
9,046 Points
Siddharth Pande
Siddharth Pande
9,046 Points 
function print(message) {
  document.write(message);
}

var questArray = [
  ["Which gas helps in burning?","OXYGEN"],
  ["Who is the incumbent Prime Minister of India?","NARENDRA MODI"],
  ["Which state is the Capital of India?","DELHI"]
];

//All the main code is in this function:
function quiz (array) { //array is a parameter where argument will be passed.
  var finalHtml = "<p>" //To produce the Html code

  /*To make the 
  wrong answer Html Code*/
  var wrongStr = "<h4>You got these questions wrong: </h4><ol>" 

  var correctAnswer = 0; // Counter for number of correct guesses

  // To Make the correct Answer Html Code
  var correctStr = "<h4> You got these questions correct: </h4><ol>";

  //Engine(loop) where questions are asked and answers are compared by iterating through the loop and using a decision making if statement.
  for(i=0; i < array.length; i += 1) {
    var guess = prompt(array[i][0]);
    if (guess.toUpperCase() === array[i][1]) {
      correctAnswer += 1;
      correctStr += "<li>" + array[i][0] + "</li>"
    } else {
      wrongStr += "<li>" + array[i][0] +"</li>"  
      }
  }

  //completing the Html code 
  finalHtml += "You got " + correctAnswer + 
  " question(s) right. </p> </br>" +
  correctStr + "</ol> </br>" + wrongStr + "</ol>"; 

  //Printing the final Html code on the document
  print(finalHtml);
}

quiz(questArray); //Run the Program