好的，我使用 html、css 和 JS 做了一个小测验。我想做的是在测验结束时，我想请用户选择是否愿意再次进行测验。我想我必须使用“while”循环，但不太确定。好的，我已经添加了 html 和 JS。我认为这很容易理解。我已经添加了事件监听器，但它运行不正常，我不知道如何修复它。它给我错误消息说“addEventListener 不是函数”。
function Quiz(questions) {
this.score = 0;
this.questions = questions;
this.questionIndex = 0;
}
Quiz.prototype.getQuestionIndex = function() {
return this.questions[this.questionIndex];
}
Quiz.prototype.guess = function(answer) {
if(this.getQuestionIndex().isCorrectAnswer(answer)) {
this.score++;
}
this.questionIndex++;
}
Quiz.prototype.isEnded = function() {
return this.questionIndex === this.questions.length;
}
function Question(text, choices, answer) {
this.text = text;
this.choices = choices;
this.answer = answer;
}
Question.prototype.isCorrectAnswer = function(choice) {
return this.answer === choice;
}
function populate() {
if(quiz.isEnded()) {
showScores();
}
else {
// show question
var element = document.getElementById("question");
element.innerHTML = quiz.getQuestionIndex().text;
// show options
var choices = quiz.getQuestionIndex().choices;
for(var i = 0; i < choices.length; i++) {
var element = document.getElementById("choice" + i);
element.innerHTML = choices[i];
guess("btn" + i, choices[i]);
}
showProgress();
}
};
function guess(id, guess) {
var button = document.getElementById(id);
button.onclick = function() {
quiz.guess(guess);
populate();
}
};
function showProgress() {
var currentQuestionNumber = quiz.questionIndex + 1;
var element = document.getElementById("progress");
element.innerHTML = "Question " + currentQuestionNumber + " of " + quiz.questions.length;
};
米琪卡哇伊
相关分类