I am trying to set a "Timer" for my online exam page using html and JavaScript, where you can see the code below. But I have problems:
Problem:
a) I need to show the time at a fixed time, when the exam should end at a fixed time. If the examiner cannot complete the exam on time, a warning message about "Time" should appear on the page and should display the last page of the general response that the user tried, grade and time when the user finished the exam.
b) we can see how "Your left time: 1 minute: 53 seconds" works at the bottom of my page, where I saved min = 1. But this is shown as your left time - 0 minutes: 59 seconds , because I saved min = 1
c) Here I want to show the ideal time with hours, minutes and seconds, where in the future, if there are any changes in hours, minutes and seconds.
JSFiddle: https://jsfiddle.net/fs6xaeox/
the code:
<!DOCTYPE html>
<html>
<head>
<meta charset="UFT-8">
<link rel="stylesheet" href="menu.css">
<link rel="stylesheet" href="layout.css">
<script>
var pos = 0, test, test_status, question, choice, choices, chA, chB, chC, correct = 0;
var questions = [
[ "Which of the following a is not a keyword in Java ?", "class", "interface", "extends", "C" ],
[ "Which of the following is an interface ?", "Thread", "Date", "Calender", "A" ],
[ "Which company released Java Version 8 ?", "Sun", "Oracle", "Adobe", "A" ],
[ "What is the length of Java datatype int ?", "32 bit", "16 bit", "None", "C" ],
[ "What is the default value of Java datatype boolean?","true","false","0","A"]
];
function _(x){
return document.getElementById(x);
}
function renderQuestion(){
test = _("test");
var showscore=Math.round(correct/questions.length*100);
if(pos >= questions.length){
document.getElementById("online_start").src = "animatedthankyou.gif";
test.innerHTML = "<h3>You got "+correct+" correct of "+questions.length+" questions</h3>";
test.innerHTML += "<h3> Your Grade : "+showscore +"% </h3>";
test.innerHTML +="<h4>Exam Finished in Time:" + sec+" Seconds</h4>";
test.innerHTML += "<button onclick='EndExam()'>End the Exam</button>";
_("test_status").innerHTML = "<h3>Test Completed</h3>";
pos = 0;
correct = 0;
clearTimeout(tim);
document.getElementById("starttime").style.display += 'none';
document.getElementById("showtime").style.display += 'none';
return false;
}
_("test_status").innerHTML = "<h3>Question "+(pos+1)+" of "+questions.length+"</h3>";
question = questions[pos][0];
chA = questions[pos][1];
chB = questions[pos][2];
chC = questions[pos][3];
test.innerHTML = "<h3>"+question+"</h3>";
test.innerHTML += "<input type='radio' name='choices' value='A'> "+chA+"<br>";
test.innerHTML += "<input type='radio' name='choices' value='B'> "+chB+"<br>";
test.innerHTML += "<input type='radio' name='choices' value='C'> "+chC+"<br><br>";
test.innerHTML += "<button onclick='checkAnswer()'>Next</button><br><br>";
}
function checkAnswer(){
choices = document.getElementsByName("choices");
choice=-1;
for(var i=0; i<choices.length; i++){
if(choices[i].checked){
choice = choices[i].value;
}
}
if(choice == questions[pos][4]){
correct++;
}
pos++;
renderQuestion();
}
window.addEventListener("load", renderQuestion, false);
function EndExam(){
location.href="Loginpage.htm";
}
var tim;
var showscore=Math.round(correct/questions.length*100);
var min = 1;
var sec = 60;
var f = new Date();
function starttime() {
showtime();
document.getElementById("starttime").innerHTML = "<h4>You started your Exam at " + f.getHours() + ":" + f.getMinutes()+"</h4>";
}
function showtime() {
if (parseInt(sec) > 0) {
sec = parseInt(sec) - 1;
document.getElementById("showtime").innerHTML = "Your Left Time is :"+min+" Minutes :" + sec+" Seconds";
tim = setTimeout("showtime()", 1000);
}
else {
if (parseInt(sec) == 0) {
min = parseInt(min) - 1;
document.getElementById("showtime").innerHTML = "Your Left Time is :"+min+" Minutes :" + sec+" Seconds";
if (parseInt(min) == 0) {
clearTimeout(tim);
alert("Time Up");
window.location.href = "Loginpage.htm";
}
else {
sec = 60;
document.getElementById("showtime").innerHTML = "Your Left Time is :" + min + " Minutes :" + sec + " Seconds";
tim = setTimeout("showtime()", 1000);
}
}
}
}
</script>
</head>
<body onload="starttime()" >
<div id="Holder">
<div id="Header"></div>
<div id="NavBar">
<nav>
<ul>
<li><a href="Loginpage.htm"> Login</a></li>
<li><a href="Registrationpage.htm">Registration</a></li>
</ul>
</div>
<div id="Content">
<div id="PageHeading">
<h1><marquee direction="right" behavior="alternate">All the Best</marquee></h1>
</div>
<div id="ContentLeft">
<h2></h2><br>
<img id="online_start">
<br>
<h6>Online Examination System(OES) is a Multiple Choice Questions(MCQ) based
examination system that provides an easy to use environment for both
Test Conducters and Students appearing for Examination.</h6>
</div>
<div id="ContentRight">
<section class="loginform_cf">
<table>
<tr>
<td id="test_status" style="text-align:left" ></td>
<td id="starttime" style="text-align:right"></td>
</tr>
<tr>
<td id="test" colspan="2"></td>
</tr>
</table>
<div id="showtime" ></div>
</section>
</div>
</div>
<div id="Footer">Developed by - K.P.RAJU</div>
</div>
</body>
</html>
may help in solving this problem.