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javascript - 我希望它继续到 javascript 测验中数组中的下一个元素

转载 作者:行者123 更新时间:2023-11-29 23:46:08 24 4
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所以我有一些代码,一旦它完成了一个问题,它就停止了,一旦你选择了一个问题并完成了问题并做对了它就会继续到数组中的下一个问题,但是如果你弄错了它就停止了。

我还有一个小错误,当你输入一个问题编号,然后按回车键时,它会继续到数组中的问题 0

如果您能提供帮助,请提供帮助,在此先感谢您。我今年 11 岁,大约一年前开始编程。

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Are you smarter than a 5th Grader?!!</title>
<link rel="stylesheet" href="style.css">
</head>
<body onload="starter()" bgcolor="lightblue">
<h1><marquee><font color="red">Make Trivia Great Again!</font>
</marquee></h1>
<h2><em><center>Are You Smater Than a 5th Grader?</center></em></h2>
<button onclick="sc()">Start</button><br>
<p id="demo"> </p>
<div id="result"></div>
<button onclick="reset()">Reset Score</button>
<script>
function starter(){
setTimeout("clickCounter()",100)
setTimeout("minusCounter()",101)}
function reset(){
setTimeout("clickCounter()",100)
localStorage.clickcount=-1

}
function clickCounter() {
if(typeof(Storage) !== "undefined") {

if (localStorage.clickcount) {
localStorage.clickcount = Number(localStorage.clickcount)+1;
} else {
localStorage.clickcount = 0;
}
document.getElementById("result").innerHTML = "Score:"+
localStorage.clickcount
} else {
} }
function minusCounter(){

if(typeof(Storage) !== "undefined") {

if (localStorage.clickcount) {
localStorage.clickcount = Number(localStorage.clickcount)-1;
} else {
localStorage.clickcount = 0;
}
document.getElementById("result").innerHTML = "Score:"+
localStorage.clickcount
} else {
}
}

if (!("scramble" in Array.prototype)) {
Object.defineProperty(Array.prototype, "scramble", {
enumerable: false,
value: function() {
var o, i, ln = this.length;
while (ln--) {
i = Math.random() * (ln + 1) | 0;
o = this[ln];
this[ln] = this[i];
this[i] = o;
}
return this;
}
});
}
var quiz = [{
"question": ["Bug in the editor"],
"choices": ["Please Ignore,Spam Enter or enter Cancel or Other"],
"correct": ["Other"]
}, {
"question": "Who is the founder of Microsoft?",
"choices": ["Bill Gates", "Steve Jobs", "Steve Wozniak" , "Martin
Shaba"],
"correct": "Bill Gates"
}, {
"question": "What was your first dream?",
"choices": ["8 bits", "64 bits", "1024 bits"],
"correct": "8 bits"
}, {
"question": "The C programming language was developed by?",
"choices": ["Brendan Eich", "Dennis Ritchie", "Guido van
Rossum"],
"correct": "Dennis Ritchie"
}, {
"question": "What does CC mean in emails?",
"choices": ["Carbon Copy", "Creative Commons", "other"],
"correct": "Carbon Copy"
}, {
"question": "What is the full for of IP",
"choices": ["Internet provider", "Intenet Port",
"Other","Internet Protocol"],
"correct": "Carbon Copy"
}]
function stop(){
alert("stopped")
}
function sc(){
quiz.forEach(q => q.choices.scramble());
var x = prompt("Select Start question number #:");
if (x>=6){
alert("please pick a valid question")
sc()
}
else if (x<=5&&x>0){

}

else if(x=0){
alert("please pick a valid question")
sc()
}

else{alert("Please pick a valid question"),sc()}

var ans = ""
function myFunction(item, index) {
ans += "\n[" + (index+1) + "]: " + item ;
}
quiz[x].choices.forEach(myFunction);

var y = prompt(quiz[x].question+"\nYour anwser is:"+ans);

if (y == quiz[x].correct){
alert("Correct!")
clickCounter()

}
else if(y=="Cancel"){alert("canceled")}
else{
alert("Wrong! Please Try Again.");
repeat()
}
function repeat(){
quiz.forEach(q => q.choices.scramble());
var ans = ""
function myFunction(item, index) {
ans += "\n[" + (index+1) + "]: " + item ;
}
quiz[x].choices.forEach(myFunction);

var y = prompt(quiz[x].question+"\nYour anwser is:"+ans);

if (y == quiz[x].correct){
alert("Correct!,Good Job")
clickCounter()


}
else if(y=="Cancel"){alert("canceled")}
else{
alert("Sorry! \nThe right answer is "+quiz[x].correct);

}
}

}

</script>


</body>
</html>

最佳答案

首先,欢迎来到编程世界,年轻的程序员:)

在回答你的问题之前,我会给你以下建议:

整理你的代码。你可能认为你需要很多时间和精力来做这件事,但事实是 - 你最终节省了大量调试时间。

专业程序员实际上大部分时间都花在计划和调试上,而不是编码本身。因此,使调试变得简单很重要。这样做的第一步是编写整洁的代码。

您的问题很好地证明了这一点:您不知道发生了什么问题并且您看不到。 (其他任何人阅读和帮助也是一种痛苦)

其实就是两个简单的问题:

  1. 您的 sc() 函数有一个无限循环函数调用
    var x 的 else-if 情况下,您需要添加一个 return 以离开函数。
  2. 你几乎总是通过错误输入 x = 0 而不是 x == 0
    来触发这个无限循环(假设您知道 x = 0x == 0 不同)

所以下面是涉及的代码:

        if (x >= 6) {
alert("please pick a valid question")
sc()
} else if (x <= 5 && x > 0) {

} else if (x == 0) { // x = 0 is assignment, not comparison
alert("please pick a valid question")
sc()
return; // You have to 'return' here
// otherwise the code following the else would continue to execute after this inner-sc() returns
} else {
alert("Please pick a valid question"), sc()
}

此外,您的测验数组的字符串中有换行符。我不确定是否只是您复制并粘贴到添加了这些换行符的 Stack Overflow,但如果不是,字符串不应包含换行符。如果您需要添加换行符,请使用换行符 \n(反斜杠 n)

关于javascript - 我希望它继续到 javascript 测验中数组中的下一个元素,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/44059711/

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