我想在多项选择中制作倒数计时器。我想逐个展示问题。但是当我点击下一个问题时，时间再从10分钟开始，而不是继续。
如果时间结束，如何发出警报，它会直接转到结果？
请帮助，我是javascript初学者。
代码：
<?php
error_reporting(0);
$randomizequestions ="yes";
$a = array(
1 => array(
0 => "____ is a question that concerns the researchers who have been studying it.",
1 => "Because the spotted owl’s survival",
2 => "Whether the spotted owl can survive",
3 => "Can the spotted owl’s survival",
4 => "The spotted owl could survive",
6 => 2
),
2 => array(
0 => "Most shrubs should be fertilized early in the summer ____ late fertilizing can damage some plants.",
1 => ". Only if",
2 => "; in fact,",
3 => ", which",
4 => ": because",
6 => 2
),
3 => array(
0 => "In the eighth century, the calendar used in Europe was not as _____ used by the Mayans in Central America.",
1 => "accurately as",
2 => "accurate than",
3 => "accurate as that",
4 => "accurate that was",
6 => 3
),
4 => array(
0 => "_____ crude hydrocarbons into such products as gasoline and petrochemicals is at the heart of the petroleum industry.",
1 => "Refine",
2 => "Are refined",
3 => "By refining",
4 => "Refining",
6 => 4
),
5 => array(
0 => "We ____ visit Eric when we are in London.",
1 => "ought ",
2 => "should ",
3 => "didn’t ought ",
4 => "ought to",
6 => 2
),
6 => array(
0 => "I hardly ever go swimming _______.",
1 => "nowadays",
2 => "soon",
3 => "today",
4 => "everydays",
6 => 1
),
7 => array(
0 => "Which word goes in the space? Can you look after the ___ rabbit while we are on holiday?",
1 => "childrens’s ",
2 => "childrens’ ",
3 => "children’s ",
4 => "child",
6 => 3
),
8 => array(
0 => "The hummingbird’s agility in flight lets it ____ from flower to flower like an insect.",
1 => "flit",
2 => "flitting",
3 => "to flit",
4 => "flits",
6 => 1
),
9 => array(
0 => "We went to the cinema and we went out for a drink ___.",
1 => "afterwards",
2 => "after",
3 => "then",
4 => "and then",
6 => 1
),
10 => array(
0 => "Do ____ of you have any money I can borrow?",
1 => "either ",
2 => "both ",
3 => "neither",
4 => "Theres No Answer",
6 => 1
),
11 => array(
0 => "Justice Sandra Day O'connor was _____ to serve on the U.S Supreme Court.",
1 => "the women who first",
2 => "the first woman ",
3 => "who the fisrt woman",
4 => "the first and a woman",
6 => 2
),
12 => array(
0 => "North Carolina is well known not only for the Great Smoky Mountains National Park ____ for the Cherokee settlements",
1 => "but also",
2 => "also",
3 => "because",
4 => "because of",
6 => 1
),
13 => array(
0 => "Humans _____ by what holds objects together.",
1 => "always fascinated",
2 => "have always fascinated",
3 => "always has been fascinated",
4 => "have always been fascinated",
6 => 4
),
14 => array(
0 => "In eastern Canada _____ approaches two hundred inches in Quebec and Newfoundland.",
1 => "where the seasonal rainfall",
2 => "the seasonal rainfall",
3 => "that the seasonal rainfall",
4 => "the seasonal rainfall it",
6 => 4
),
15 => array(
0 => "Large, fast–moving trucks have been known to create blasts of wind _____ a motorcyclist.",
1 => "can startle",
2 => "can they startle",
3 => "that can startle",
4 => "are startling",
6 => 3
),
);
$max=15;
$question=$_POST["question"] ;
if ($_POST["Randon"]==0){
if($randomizequestions =="yes"){$randval = mt_rand(1,$max);}else{$randval=1;}
$randval2 = $randval;
}else{
$randval=$_POST["Randon"];
$randval2=$_POST["Randon"] + $question;
if ($randval2>$max){
$randval2=$randval2-$max;
}
}
$ok=$_POST["ok"] ;
if ($question==0){
$question=0;
$ok=0;
$percentaje=0;
}else{
$percentaje= Round(100*$ok / $question);
}
if ($persentaje == 100){
$hasil="C2 Proficiency";
}elseif ($persentaje > 80) {
$hasil="C1 Advanced";
}elseif ($persentaje > 60) {
$hasil="B2 Upper Intermediate";
}elseif ($persentaje > 50) {
$hasil="B1 Intermediate";
}elseif ($persentaje > 40) {
$hasil="A2 Pre Intermediate";
}elseif ($persentaje > 30) {
$hasil="A2 Elementary";
}else {
$hasil="A1 Beginner";
}
?>
<!DOCTYPE html>
<html lang="en">
<head>
<title>TOEFL Online</title>
<meta charset="utf-8">
<link rel="icon" href="">
<link rel="shortcut icon" href="images/favicon.png">
<link rel="stylesheet" href="css/style.css">
<script type='text/javascript' src='http://code.jquery.com/jquery-1.10.2.min.js'></script>
<script language='JavaScript'>
<!--
function Goahead (number){
if (document.percentaje.response.value==0){
if (number==<?php print $a[$randval2][6] ; ?>){
document.percentaje.response.value=1
document.percentaje.question.value++
document.percentaje.ok.value++
}else{
document.percentaje.response.value=1
document.percentaje.question.value++
}
}
if (number==<?php print $a[$randval2][6] ; ?>){
document.question.response.value="Correct"
}else{
document.question.response.value="Incorrect"
}
}
$(document).ready(function() {
var detik = 3;
var menit = 0;
var jam = 1;
function hitung() {
setTimeout(hitung,1000);
$('#tampilkan').html( + menit + ' Menit ' + detik + ' Detik ');
detik --;
if(detik < 0) {
detik = 59;
menit --;
if(menit < 0) {
menit = 9;
jam --;
if(jam < 0) {
jam = 0;
menit = 0;
detik = 0;
}
}
}
}
hitung();
});
// -->
</script>
</head>
<body>
<!--Start Header-->
<header class="page1">
<div class="container_12">
<div class="grid_12">
<h1><a href="#" onClick="goToByScroll('page1'); return false;"><img height="30px" width="1300px" src="images/logo2.png" alt=""></a></h1>
<div class="menu_block">
<nav class="">
<ul class="sf-menu">
<li class="men1"><a onClick="goToByScroll('page1'); return false;" href="index.html">Home</a><strong class="hover"></strong></li>
</ul>
</nav>
</div>
</div>
</div>
</header>
<!--End Header-->
<div id="page2" class="content">
<div class="container_12">\
<div class="grid_14">
<div class="box">
<div id="tampilkan" class="slogan4" style="color:black; margin-left:150px; width:620px; padding:10px 0px; font-size:17px;">
</div>
<div style="background-color:#666666; color:white; margin-left:150px; width:620px; padding:10px 0px; font-size:17px;">? Test Your Level Of English Vocab/Grammar.
<div class="box3">
<table border="0" cellspacing="5px" width="580px">
<?php if ($question<$max){ ?>
<tr><td>
Tes ini tentang rammar dan vocabulary dan hasil dari tes ini akan membantu anda mengetahui level CEFR anda. Anda <b>tidak dapat melihat jawaban yang benar</b> pada tes ini. Anda harus menyelesaikan tes dalam 10 menit. Good Luck. <br><br>
<hr>
</td></tr>
<tr><td>
<form method="POST" name="question" action="">
<br><strong><?php print $question+1; ?>. </strong><?php print "<b>".$a[$randval2][0]."</b>"; ?>
<br><input type="radio" name="option" value="1" onClick="Goahead (1);"><?php print $a[$randval2][1] ; ?>
<br><input type="radio" name="option" value="2" onClick="Goahead (2);"><?php print $a[$randval2][2] ; ?>
<?php if ($a[$randval2][3]!=""){ ?>
<br><input type="radio" name="option" value="3" onClick="Goahead (3);"><?php print $a[$randval2][3] ; } ?>
<?php if ($a[$randval2][4]!=""){ ?>
<br><input type="radio" name="option" value="4" onClick="Goahead (4);"><?php print $a[$randval2][4] ; } ?>
<br><br>
</form>
<tr><td>
<form method="POST" name="percentaje" action="<?php print $URL; ?>">
<input type="hidden" name="response" value=0>
<input type="hidden" name="question" value=<?php print $question; ?>>
<input type="hidden" name="ok" value=<?php print $ok; ?>>
<input type="hidden" name="Randon" value=<?php print $randval; ?>>
<input style="font-family:Trebuchet ms; font-size:14.5px; width:80px; border:1px;" type="submit" value="Next">
<br><br></form>
</td></tr>
<?php
}else{
?>
<tr><td align="center">
The Quiz has finished<br>
<br>Percentage of correct responses: <?php print $percentaje ; ?> %
<br>Hasil: <?php print $hasil ?>
<p><a href="<?php print $address; ?>">Restart</a>
<?php } ?>
</td></tr>
</table>
</div>
</div>
</div>
</div>
</div>
</div>
<footer>
<div class="copy2"></a> © Febriani F Damanik (132406106) | <a href="#">Privacy Policy</a> <br> </div>
</footer>
</body>
</html>
答案 0 :(得分：0)
在PHP上使用服务器端的时间计数，并在页面加载时将其发送给JS。 JS只显示倒计时，如果超过时间，请使用form.submit（）。
您不应该像这样在源HTML上发送正确的答案信息，用户可以查看源代码并查看正确的答案。