实现三元运算符创建无限循环
这是JS：
function Question(question, answers, correct) {
this.question=question;
this.answers=answers;
this.correct=correct;
}
Question.prototype.displayQuestion=function () {
console.log(this.question)
this.answers.forEach((answer, i)=> {
console.log(`${i}: ${answer}`)
})
}
Question.prototype.checkAnswer=function(answer) {
(answer==this.correct)? true: false
}
var q1=new Question("What day is it today?", ["Monday", "Tuesday"], 0)
var q2=new Question("How are you?", ["Good", "Really good"], 1)
var q3=new Question("Is it nice out?", ["Yes", "No", "In-between"], 3)
var questions=[q1, q2, q3];
function createGame() {
var num=Math.floor(Math.random()*questions.length)
questions[num].displayQuestion()
var userInput=parseInt(prompt("Please enter answer"))
questions[num].checkAnswer(userInput)? console.log('You won!'): createGame()
}
createGame()
这是 index.html
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Section 5: Advanced JavaScript: Objects and Functions</title>
</head>
<body>
<h1>Section 5: Advanced JavaScript: Objects and Functions</h1>
<script src="script.js"></script>
</body>
</html
我对这个简单程序的目标是不断输出问题，直到用户做对为止。如果用户答对了问题，您将使用 console.log("You won!") 并且程序将停止运行。我在三元运算符的帮助下做到了这一点。但是，为什么我的程序会一直运行？
跃然一笑1回答
-
ABOUTYOU
checkAnswer总是返回 undefined 因为你没有做return任何事情：Question.prototype.checkAnswer=function(answer) { return answer==this.correct}
随时随地看视频慕课网APP
相关分类
JavaScript