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JavaScript JavaScript Loops, Arrays and Objects Tracking Multiple Items with Arrays Build a Quiz Challenge, Part 2 Solution

Posted by Irek Zagan
Irek Zagan
3,889 Points

My solution - review please

Hi, this is how I solved the challenge. Could I please receive some feedback on how to make it simpler/neater? Thanks!

var answer = ''
var correctGuess = 0
var wrongGuess = 0

var reportCorrect = [];
var reportWrong = [];

var questionAnswer = [
    ['What is 1 + 1?', 2],
    ['What is 2 + 2?', 4],
    ['What is 3 + 3?', 6]
];

for (var i = 0; i < questionAnswer.length; i += 1) {
    answer = parseInt(prompt(questionAnswer[i][0]))
    if (answer === questionAnswer[i][1]) {
        correctGuess += 1;
        reportCorrect.push(questionAnswer[i][0])
    } else {
        wrongGuess += 1;
        reportWrong.push(questionAnswer[i][0])
    }
}
    if (correctGuess > 0) {
        document.write("You answered " + correctGuess + " question(s) correctly!")
        document.write("<li> You answered these questions correctly:</li><ul>" + reportCorrect.join('<br />') + "</ul>")
    } else {
        document.write("<h2>You missed all the questions!</h2>")
}
    if (wrongGuess > 0) {
        document.write("<li> You answered these questions wrong:</li><ul>" + reportWrong.join('<br />') + "</ul>")
}
Carlos Chang Cheng
Carlos Chang Cheng
Courses Plus Student 12,030 Points

function print(message) { var outputDiv = document.getElementById('output'); outputDiv.innerHTML = message; }

function buildList(arrayList){ var listHTML= '<ol>'; for(var i = 0; i < arrayList.length; i+= 1){ listHTML += '<p>' + arrayList[i] + '</p>'; } listHTML += '</ol>'; return listHTML; }

var answer = '' var correctGuess = 0 var wrongGuess = 0 var html = ''; var reportCorrect = []; var reportWrong = [];

var questionAnswer = [ ['What is 1 + 1?', 2], ['What is 2 + 2?', 4], ['What is 3 + 3?', 6] ];

for (var i = 0; i < questionAnswer.length; i += 1) { answer = parseInt(prompt(questionAnswer[i][0])) if (answer === questionAnswer[i][1]) { correctGuess += 1; reportCorrect.push(questionAnswer[i][0]); } else { wrongGuess += 1; reportWrong.push(questionAnswer[i][0]); } }

html += '<h2>You got ' + correctGuess + ' answers right</h2>'; html+= '<h2>You got these answer(s) right:</h2>'; html+= buildList(reportCorrect); html+= '<h2>You got these answer(s) wrong:</h2>'; html+= buildList(reportWrong); print(html);