javascript - 试图为我的编码测验编写一个检查答案，但它不能正常工作，我错过了什么？

Question

这是我要开始工作的代码：

function checkAnswer(questionIndex) {

// This ID goes to a div storing the four buttons
    var answersId = document.getElementById("answers");

//The four spans inside the buttons which has data-answer, targeting at their id. The id and data-answer are the same value.

    var answer0 = document.getElementById("option0").getAttribute("data-answer");
    var answer1 = document.getElementById("option1").getAttribute("data-answer");
    var answer2 = document.getElementById("option2").getAttribute("data-answer");
    var answer3 = document.getElementById("option3").getAttribute("data-answer");

    answersId.addEventListener("click", function (event) {

        if (event.target.hasAttribute("data-answer")) {

            event.preventDefault;

            if (answer0 == questionList[questionIndex].correctAnswer) {
                console.log(answer0)
                score++;
                console.log(score)
                console.log("This is option0")

            }

            else if (answer1 == questionList[questionIndex].correctAnswer) {

                console.log(answer1)
                score++;
                console.log(score)
                console.log("This is option1")


            } else if (answer2 == questionList[questionIndex].correctAnswer) {

                console.log(answer2)
                score++;
                console.log(score)
                console.log("This is option2")

            } else if (answer3 == questionList[questionIndex].correctAnswer) {

                console.log(answer3)
                score++;
                console.log(score)
                console.log("This is option3")

            } else {

                console.log(score)
            }
        }
    });
}

这现在有点硬编码，但我想在优化它之前确保它确实有效。

基本上，我有用于多项选择测验的按钮，其想法是，根据单击的按钮，他们会获得选择正确答案的分数。在这种情况下，数据答案应该与正确答案相匹配。（如果正确答案是 option1，那么 "option1" == "option1"）

但是无论单击哪个按钮（在这种情况下，答案确实是 option1），它都会给出要点并为选项 1 提供 console.log，这意味着即使我选择其他按钮，它也会不断选择 if 语句.

错误的答案（即 else 语句）没有被识别，或者更确切地说，尽管单击了错误的答案，它仍会继续识别第二个 if 语句，这让我发疯了。我认为我的逻辑是合理的，只是工作不正常。

你知道我在这里可能会错过什么吗？

编辑：这是被引用的 questionList 数组，以及每个变量的对象：

var question1 = {
    text: "Commonly used data types do NOT include:",
    choices: ["1 - Booleans", "2 - Alerts", "3 - Strings", "4 - Numbers"],
    correctAnswer: "option1",
};

var question2 = {

    text: "The condition of an if/else statement is enclosed within ______.",
    choices: ["1 - Quotes", "2 - Curly Brackets", "3 - Parentheses", "4 - Square Brackets"],
    correctAnswer: "option2",
};

var question3 = {
    text: "Arrays in Javascript can be used to store ______.",
    choices: ["1 - Numbers and strings", "2 - Other Arrays", "3 - Booleans", "4 - All of the above",],
    correctAnswer: "option3",
};

var question4 = {
    text: "String values must be enclosed within ______ when being assigned to variables.",
    choices: ["1 - Quotes", "2 - Curly Brackets", "3 - Commas", "4 - Parentheses"],
    correctAnswer: "option0",
};

var question5 = {
    text: "A very useful tool used during development and debugging for printing content to the debugger is:",
    choices: ["1 - Javascript", "2 - console.log", "3 - Terminal/bash", "4 - For loops"],
    correctAnswer: "option1",
};

var questionList = [question1, question2, question3, question4, question5];

编辑2：

添加我正在调用该函数的位置。这次我将事件监听器从 checkAnswer() 函数中移出，就在它被调用之前。

document.getElementById("start-quiz").addEventListener("click", function (event) {

    event.preventDefault;
    event.stopPropagation;

    countDown = 75;
    countDownSpan.textContent = countDown;
    document.querySelector("#description").style.display = "none";
    document.querySelector("#start-quiz").style.display = "none";
    contentId.style.textAlign = "left";
    setTime();
    createAnswers();
    generateQA(0);

    var answersId = document.getElementById("answers");

    answersId.addEventListener("click", function (event) {

        checkAnswer(0)

    });
});

编辑3：

如果有帮助，这里是 github 页面的链接：

https://github.com/WarriorofZarona/Coding-Quiz GitHub

标签： javascriptdomevents