1
Hello,
I am pretty new to JavaScript. I was trying one of the examples in my Text Book JavaScript Third Edition and for some reason I can't seem to get the windows alert popups to say if the answer is correct or incorrect. Below is the code that the book has me using. Can someone please tell me where I have gone wrong and how I can fix it.
Thank you so much.
[HTML]<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/dtd/xhtml1-strict.dtd">
<html>
<head>
<title>Dinosaur Quiz</title>
<script type="text/javascript">
<!-- HIDE FROM INCOMPATIBLE BROWSERS
A response of "Correct Answer" appears if the user provides the correct answer.
A response of "Incorrect Answer" appears if the user provides the incorrect answer.
function scoreQuestion1 (b) {
if (answer == "a")
window.alert("Incorrect Answer");
if (answer == "b")
window.alert("Correct Answer");
if (answer == "c")
window.alert("Incorrect Answer");
if (answer == "d")
window.alert("Incorrect Answer");
}
function scoreQuestion2 (b){
if (answer == "a")
window.alert("Incorrect Answer");
if (answer == "b")
window.alert("Correct Answer");
if (answer == "c")
window.alert("Incorrect Answer");
if (answer == "d")
window.alert("Incorrect Answer");
}
function scoreQuestion3 (c){
if (answer == "a")
window.alert("Incorrect Answer");
if (answer == "b")
window.alert("Incorrect Answer");
if (answer == "c")
window.alert("Correct Answer");
if (answer == "d")
window.alert("Incorrect Answer");
}
function scoreQuestion4 (d){
if (answer == "a")
window.alert("Incorrect Answer");
if (answer == "b")
window.alert("Incorrect Answer");
if (answer == "c")
window.alert("Incorrect Answer");
if (answer == "d")
window.alert("Correct Answer");
}
function scoreQuestion5 (a){
if (answer == "a")
window.alert("Correct Answer");
if (answer == "b")
window.alert("Incorrect Answer");
if (answer == "c")
window.alert("Incorrect Answer");
if (answer == "d")
window.alert("Incorrect Answer");
}
//STOP HIDING FROM INCOMPATIBLE BROWSERS -->
</script>
</head>
<body>
<h1>Dinosaur Quiz</h1>
<form action="">
<p><b>1. Which dinosaur was the heaviest?</b></p>
<p><input type="radio" name="question1" value="a"
onclick="scoreQuestion1"('a') />Tyrannosaurus<br />
<input type="radio" name="question1" value="b"
onclick="scoreQuestion1"('b') />Brachiosaurus<br />
<input type="radio" name="question1" value="c"
onclick="scoreQuestion1"('c') />Brontosaurus<br />
<input type="radio" name="question1" value="d"
onclick="scoreQuestion1"('d') />Diplodocus</p>
<p><b>2. When did dinosaurs become extinct?</b></p>
<p><input type="radio" name="question2" value="a"
onclick="scoreQuestion2"('a') />1 billion years ago<br />
<input type="radio" name="question2" value="b"
onclick="scoreQuestion2"('b') />65 million years ago<br />
<input type="radio" name="question2" value="c"
onclick="scoreQuestion2"('c') />10 million years ago<br />
<input type="radio" name="question2" value="d"
onclick="scoreQuestion2"('d') />15,000 years ago</p>
<p><b>3. Which of these is not a dinosaur?</b></p>
<p><input type="radio" name="question3" value="a"
onclick="scoreQuestion3"('a') />Megalosaurus<br />
<input type="radio" name="question3" value="b"
onclick="scoreQuestion3"('b') />Apatosaurus<br />
<input type="radio" name="question3" value="c"
onclick="scoreQuestion3"('c') />Pterodactyl<br />
<input type="radio" name="question3" value="d"
onclick="scoreQuestion3"('d') />Triceratops</p>
<p><b>4. In which period did the Diplodocus live?</b></p>
<p><input type="radio" name="question4" value="a"
onclick="scoreQuestion4"('a') />Early Cretaceous<br />
<input type="radio" name="question4" value="b"
onclick="scoreQuestion4"('b') />Early Triassic<br />
<input type="radio" name="question4" value="c"
onclick="scoreQuestion4"('c') />Late Triassic<br />
<input type="radio" name="question4" value="d"
onclick="scoreQuestion4"('d') />Late Jurassic</p>
<p><b>5. Which of the following dinosaurs was a carnivore?</b></p>
<p><input type="radio" name="question5" value="a"
onclick="scoreQuestion5"('a') />Tryannosaurus<br />
<input type="radio" name="question5" value="b"
onclick="scoreQuestion5"('b') />Triceratops<br />
<input type="radio" name="question5" value="c"
onclick="scoreQuestion5"('c') />Stegosaurus<br />
<input type="radio" name="question5" value="d"
onclick="scoreQuestion5"('d') />Brontosaurus</p>
</form>
</body>
</html>[/HTML]
