我几天来一直在做这个测验。我设法在最后创建了一个带有解决方案的测验，但我不希望这样。我希望解决方案出现在用户给出的每个错误答案的最后，如果用户是正确的，则不应显示答案，
<HEAD>
<style type="text/css">
<!--
.bgclr {background-color: white; color: black; font-weight: bold;}
-->
</style>
<script language="JavaScript">
// Insert scooter questions number of questions
var numQues = 5;
// Insert number of choices in each question
var numChoi = 3;
// Insert number of questions displayed in answer area
var answers = new Array(5);
// Insert answers to questions
answers[0] = "Keep to the left side of the road far as is safe.";
answers[1] = "Road which cross.";
answers[2] = "When a traffic officer order you to do so.";
answers[3] = "Traffic circle where right of way is applicable.";
answers[4] = "(i), (ii) and (iii)";
answers[5] = "A marked pedestrian crossing ahead.";
function getScore(form) {
var score = 0;
var currElt;
var currSelection;
for (i=0; i<numQues; i++) {
currElt = i*numChoi;
for (j=0; j<numChoi; j++) {
currSelection = form.elements[currElt + j];
if (currSelection.checked) {
if (currSelection.value == answers[i]) {
score++;
break;
}
}
}
}
score = Math.round(score/numQues*100);
form.percentage.value = score + "%";
var correctAnswers = "";
for (i=1; i<=numQues; i++) {
correctAnswers += i + ". " + answers[i-1] + "\r\n";
}
form.solutions.value = correctAnswers;
}
// End -->
</script>
</HEAD>
<!-- STEP TWO: Copy this code into the BODY of your HTML document -->
<BODY>
<h3>Scooter quiz by johnson</h3>
<form name="quiz">
1. Which rule is considered the most important RULE OF THE ROAD in South Africa?
<ul style="margin-top: 1pt">
<li><input type="radio" name="q1" value="Always be courteous and considerate towards fellow road users.">Always be courteous and considerate towards fellow road users.</li>
<li><input type="radio" name="q1" value="Do not exceed the speed limit.">Do not exceed the speed limit.</li>
<li><input type="radio" name="q1" value="Keep to the left side of the road far as is safe.">Keep to the left side of the road far as is safe.</li>
</ul>
2. Sign L9 warns you about... ahead.
<ul style="margin-top: 1pt">
<li><input type="radio" name="q2" value="Where you are also not allowed to park."> Where you are also not allowed to park..</li>
<li><input type="radio" name="q2" value="A railway crossing">A railway crossing</li>
<li><input type="radio" name="q2" value="Road which cross">Road which cross</li>
</ul>
3.Under what circumstances, if any, are you allowed to drive your motor motor vehicle on the right-hand side of a public road with traffic moving in both directions?
<ul style="margin-top: 1pt">
<li><input type="radio" name="q3" value="When you switch the emergency lights of your vehicle on.">When you switch the emergency lights of your vehicle on.</li>
<li><input type="radio" name="q3" value="When a traffic officer order you to do so.">When a traffic officer order you to do so.</li>
<li><input type="radio" name="q3" value="Under no circumstance.">Under no circumstance.</li>
</ul>
4.Sign CC9 is found at ..
<ul style="margin-top: 1pt">
<li><input type="radio" name="q4" value="Traffic circle where right of way is applicable.">Traffic circle where right of way is applicable.</li>
<li><input type="radio" name="q4" value="Dangerous place where roadwork is being done.">Dangerous place where roadwork is being done.</li>
<li><input type="radio" name="q4" value="Sharp curve to the right.">Sharp curve to the right.</li>
</ul>
5.You may not obtain a learner’s license if...
<ul style="margin-top: 1pt">
<li><input type="radio" name="q5" value="A first-aid post."> A first-aid post.</li>
<li><input type="radio" name="q5" value="A railway crossing">A railway crossing</li>
<li><input type="radio" name="q5" value="Road which cross">Road which cross</li>
</ul>
<input type="button" value="Get score" onClick="getScore(this.form)">
<input type="reset" value="Clear answers">
<p> Score = <strong><input class="bgclr" type="text" size="5" name="percentage" disabled></strong><br><br>
Correct answers:<br>
<textarea class="bgclr" name="solutions" wrap="virtual" rows="10" cols="100" disabled>
</textarea>
</form>
答案 0 :(得分：2)
我在这里向您展示了如何针对第一个问题进行此操作。你可以在那里工作。
<HEAD>
<style type="text/css">
<!--
.bgclr {background-color: white; color: black; font-weight: bold;}
-->
.hidden {
display: none;
}
.visible {
display: block;
}
</style>
<script language="JavaScript">
// Insert scooter questions number of questions
var numQues = 5;
// Insert number of choices in each question
var numChoi = 3;
// Insert number of questions displayed in answer area
var answers = new Array(5);
// Insert answers to questions
answers[0] = "Keep to the left side of the road far as is safe.";
answers[1] = "Road which cross.";
answers[2] = "When a traffic officer order you to do so.";
answers[3] = "Traffic circle where right of way is applicable.";
answers[4] = "(i), (ii) and (iii)";
answers[5] = "A marked pedestrian crossing ahead.";
function getScore(form) {
var score = 0;
var currElt;
var currSelection;
for (i=0; i<numQues; i++) {
currElt = i*numChoi;
for (j=0; j<numChoi; j++) {
currSelection = form.elements[currElt + j];
if (currSelection.checked) {
if (currSelection.value == answers[i]) {
score++;
break;
}
}
}
}
score = Math.round(score/numQues*100);
form.percentage.value = score + "%";
var correctAnswers = "";
for (i=1; i<=numQues; i++) {
correctAnswers += i + ". " + answers[i-1] + "\r\n";
}
form.solutions.value = correctAnswers;
}
document.addEventListener('DOMContentLoaded', function() {
var q1Inputs = document.querySelector('.q1-inputs');
q1Inputs.addEventListener('change', function(event) {
if (event.target.value !== 'Keep to the left side of the road far as is safe.') {
q1Inputs.lastElementChild.classList.remove('hidden');
} else {
q1Inputs.lastElementChild.classList.add('hidden');
}
});
});
// End -->
</script>
</HEAD>
<!-- STEP TWO: Copy this code into the BODY of your HTML document -->
<BODY>
<h3>Scooter quiz by johnson</h3>
<form name="quiz">
1. Which rule is considered the most important RULE OF THE ROAD in South Africa?
<ul class="q1-inputs" style="margin-top: 1pt">
<li><input type="radio" name="q1" value="Always be courteous and considerate towards fellow road users.">Always be courteous and considerate towards fellow road users.</li>
<li><input type="radio" name="q1" value="Do not exceed the speed limit.">Do not exceed the speed limit.</li>
<li><input type="radio" name="q1" value="Keep to the left side of the road far as is safe.">Keep to the left side of the road far as is safe.</li>
<li class="hidden" style="color:red;">The correct answer is: Keep to the left side of the road far as is safe.</li>
</ul>
2. Sign L9 warns you about... ahead.
<ul style="margin-top: 1pt">
<li><input type="radio" name="q2" value="Where you are also not allowed to park."> Where you are also not allowed to park..</li>
<li><input type="radio" name="q2" value="A railway crossing">A railway crossing</li>
<li><input type="radio" name="q2" value="Road which cross">Road which cross</li>
</ul>
3.Under what circumstances, if any, are you allowed to drive your motor motor vehicle on the right-hand side of a public road with traffic moving in both directions?
<ul style="margin-top: 1pt">
<li><input type="radio" name="q3" value="When you switch the emergency lights of your vehicle on.">When you switch the emergency lights of your vehicle on.</li>
<li><input type="radio" name="q3" value="When a traffic officer order you to do so.">When a traffic officer order you to do so.</li>
<li><input type="radio" name="q3" value="Under no circumstance.">Under no circumstance.</li>
</ul>
4.Sign CC9 is found at ..
<ul style="margin-top: 1pt">
<li><input type="radio" name="q4" value="Traffic circle where right of way is applicable.">Traffic circle where right of way is applicable.</li>
<li><input type="radio" name="q4" value="Dangerous place where roadwork is being done.">Dangerous place where roadwork is being done.</li>
<li><input type="radio" name="q4" value="Sharp curve to the right.">Sharp curve to the right.</li>
</ul>
5.You may not obtain a learner’s license if...
<ul style="margin-top: 1pt">
<li><input type="radio" name="q5" value="A first-aid post."> A first-aid post.</li>
<li><input type="radio" name="q5" value="A railway crossing">A railway crossing</li>
<li><input type="radio" name="q5" value="Road which cross">Road which cross</li>
</ul>
<input type="button" value="Get score" onClick="getScore(this.form)">
<input type="reset" value="Clear answers">
<p> Score = <strong><input class="bgclr" type="text" size="5" name="percentage" disabled></strong><br><br>
Correct answers:<br>
<textarea class="bgclr" name="solutions" wrap="virtual" rows="10" cols="100" disabled>
</textarea>
</form>
更新：
<HEAD>
<style type="text/css">
<!--
.bgclr {background-color: white; color: black; font-weight: bold;}
-->
.hidden {
display: none;
}
.visible {
display: block;
}
</style>
<script language="JavaScript">
// Insert scooter questions number of questions
var numQues = 5;
// Insert number of choices in each question
var numChoi = 3;
// Insert number of questions displayed in answer area
var answers = new Array(5);
// Insert answers to questions
answers[0] = "Keep to the left side of the road far as is safe.";
answers[1] = "Road which cross.";
answers[2] = "When a traffic officer order you to do so.";
answers[3] = "Traffic circle where right of way is applicable.";
answers[4] = "(i), (ii) and (iii)";
answers[5] = "A marked pedestrian crossing ahead.";
function getScore(form) {
showCorrectAnswers();
var score = 0;
var currElt;
var currSelection;
for (i=0; i<numQues; i++) {
currElt = i*numChoi;
for (j=0; j<numChoi; j++) {
currSelection = form.elements[currElt + j];
if (currSelection.checked) {
if (currSelection.value == answers[i]) {
score++;
break;
}
}
}
}
score = Math.round(score/numQues*100);
form.percentage.value = score + "%";
var correctAnswers = "";
for (i=1; i<=numQues; i++) {
correctAnswers += i + ". " + answers[i-1] + "\r\n";
}
form.solutions.value = correctAnswers;
}
function showCorrectAnswers() {
var q1Inputs = document.querySelectorAll('.q1-inputs input');
var correctAnswer = document.querySelector('.q1-inputs span');
var correct = correctAnswer.textContent;
q1Inputs.forEach(function(element) {
if (element.checked) {
if (element.value !== correct) {
correctAnswer.classList.remove('hidden');
} else {
correctAnswer.classList.add('hidden');
}
}
});
}
// End -->
</script>
</HEAD>
<!-- STEP TWO: Copy this code into the BODY of your HTML document -->
<BODY>
<h3>Scooter quiz by johnson</h3>
<form name="quiz">
1. Which rule is considered the most important RULE OF THE ROAD in South Africa?
<ul class="q1-inputs" style="margin-top: 1pt">
<li><input type="radio" name="q1" value="Always be courteous and considerate towards fellow road users.">Always be courteous and considerate towards fellow road users.</li>
<li><input type="radio" name="q1" value="Do not exceed the speed limit.">Do not exceed the speed limit.</li>
<li><input type="radio" name="q1" value="Keep to the left side of the road far as is safe.">Keep to the left side of the road far as is safe.</li>
<span class="hidden" style="color:red;">Keep to the left side of the road far as is safe.</span>
</ul>
2. Sign L9 warns you about... ahead.
<ul style="margin-top: 1pt">
<li><input type="radio" name="q2" value="Where you are also not allowed to park."> Where you are also not allowed to park..</li>
<li><input type="radio" name="q2" value="A railway crossing">A railway crossing</li>
<li><input type="radio" name="q2" value="Road which cross">Road which cross</li>
</ul>
3.Under what circumstances, if any, are you allowed to drive your motor motor vehicle on the right-hand side of a public road with traffic moving in both directions?
<ul style="margin-top: 1pt">
<li><input type="radio" name="q3" value="When you switch the emergency lights of your vehicle on.">When you switch the emergency lights of your vehicle on.</li>
<li><input type="radio" name="q3" value="When a traffic officer order you to do so.">When a traffic officer order you to do so.</li>
<li><input type="radio" name="q3" value="Under no circumstance.">Under no circumstance.</li>
</ul>
4.Sign CC9 is found at ..
<ul style="margin-top: 1pt">
<li><input type="radio" name="q4" value="Traffic circle where right of way is applicable.">Traffic circle where right of way is applicable.</li>
<li><input type="radio" name="q4" value="Dangerous place where roadwork is being done.">Dangerous place where roadwork is being done.</li>
<li><input type="radio" name="q4" value="Sharp curve to the right.">Sharp curve to the right.</li>
</ul>
5.You may not obtain a learner’s license if...
<ul style="margin-top: 1pt">
<li><input type="radio" name="q5" value="A first-aid post."> A first-aid post.</li>
<li><input type="radio" name="q5" value="A railway crossing">A railway crossing</li>
<li><input type="radio" name="q5" value="Road which cross">Road which cross</li>
</ul>
<input type="button" value="Get score" onClick="getScore(this.form)">
<input type="reset" value="Clear answers">
<p> Score = <strong><input class="bgclr" type="text" size="5" name="percentage" disabled></strong><br><br>
Correct answers:<br>
<textarea class="bgclr" name="solutions" wrap="virtual" rows="10" cols="100" disabled>
</textarea>
</form>