Simple Dinosaur Quiz

1 New Member

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>Dinosa ur Quiz</title>
<script type="text/javascript">

</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="scoreQ uestion1"('a') />Tyrannosaurus< br />
<input type="radio" name="question1 " value="b"
onclick="scoreQ uestion1"('b') />Brachiosaurus< br />
<input type="radio" name="question1 " value="c"
onclick="scoreQ uestion1"('c') />Brontosaurus<b r />
<input type="radio" name="question1 " value="d"
onclick="scoreQ uestion1"('d') />Diplodocus</p>
<p><b>2. When did dinosaurs become extinct?</b></p>
<p><input type="radio" name="question2 " value="a"
onclick="scoreQ uestion2"('a') />1 billion years ago<br />
<input type="radio" name="question2 " value="b"
onclick="scoreQ uestion2"('b') />65 million years ago<br />
<input type="radio" name="question2 " value="c"
onclick="scoreQ uestion2"('c') />10 million years ago<br />
<input type="radio" name="question2 " value="d"
onclick="scoreQ uestion2"('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="scoreQ uestion3"('a') />Megalosaurus<b r />
<input type="radio" name="question3 " value="b"
onclick="scoreQ uestion3"('b') />Apatosaurus< br />
<input type="radio" name="question3 " value="c"
onclick="scoreQ uestion3"('c') />Pterodactyl< br />
<input type="radio" name="question3 " value="d"
onclick="scoreQ uestion3"('d') />Triceratops</p>
<p><b>4. In which period did the Diplodocus live?</b></p>
<p><input type="radio" name="question4 " value="a"
onclick="scoreQ uestion4"('a') />Early Cretaceous<br />
<input type="radio" name="question4 " value="b"
onclick="scoreQ uestion4"('b') />Early Triassic<br />
<input type="radio" name="question4 " value="c"
onclick="scoreQ uestion4"('c') />Late Triassic<br />
<input type="radio" name="question4 " value="d"
onclick="scoreQ uestion4"('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="scoreQ uestion5"('a') />Tryannosaurus< br />
<input type="radio" name="question5 " value="b"
onclick="scoreQ uestion5"('b') />Triceratops< br />
<input type="radio" name="question5 " value="c"
onclick="scoreQ uestion5"('c') />Stegosaurus< br />
<input type="radio" name="question5 " value="d"
onclick="scoreQ uestion5"('d') />Brontosaurus </p>
</form>

</body>
</html>[/HTML]

Jan 24 '07 #1

Subscribe Reply

1690

r035198x

13,262

MVP

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.

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/dtd/xhtml1-strict.dtd">
<html>
<head>
<title>Dinosa ur Quiz</title>
<script type="text/javascript">

</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="scoreQ uestion1"('a') />Tyrannosaurus< br />
<input type="radio" name="question1 " value="b"
onclick="scoreQ uestion1"('b') />Brachiosaurus< br />
<input type="radio" name="question1 " value="c"
onclick="scoreQ uestion1"('c') />Brontosaurus<b r />
<input type="radio" name="question1 " value="d"
onclick="scoreQ uestion1"('d') />Diplodocus</p>
<p><b>2. When did dinosaurs become extinct?</b></p>
<p><input type="radio" name="question2 " value="a"
onclick="scoreQ uestion2"('a') />1 billion years ago<br />
<input type="radio" name="question2 " value="b"
onclick="scoreQ uestion2"('b') />65 million years ago<br />
<input type="radio" name="question2 " value="c"
onclick="scoreQ uestion2"('c') />10 million years ago<br />
<input type="radio" name="question2 " value="d"
onclick="scoreQ uestion2"('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="scoreQ uestion3"('a') />Megalosaurus<b r />
<input type="radio" name="question3 " value="b"
onclick="scoreQ uestion3"('b') />Apatosaurus< br />
<input type="radio" name="question3 " value="c"
onclick="scoreQ uestion3"('c') />Pterodactyl< br />
<input type="radio" name="question3 " value="d"
onclick="scoreQ uestion3"('d') />Triceratops</p>
<p><b>4. In which period did the Diplodocus live?</b></p>
<p><input type="radio" name="question4 " value="a"
onclick="scoreQ uestion4"('a') />Early Cretaceous<br />
<input type="radio" name="question4 " value="b"
onclick="scoreQ uestion4"('b') />Early Triassic<br />
<input type="radio" name="question4 " value="c"
onclick="scoreQ uestion4"('c') />Late Triassic<br />
<input type="radio" name="question4 " value="d"
onclick="scoreQ uestion4"('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="scoreQ uestion5"('a') />Tryannosaurus< br />
<input type="radio" name="question5 " value="b"
onclick="scoreQ uestion5"('b') />Triceratops< br />
<input type="radio" name="question5 " value="c"
onclick="scoreQ uestion5"('c') />Stegosaurus< br />
<input type="radio" name="question5 " value="d"
onclick="scoreQ uestion5"('d') />Brontosaurus </p>
</form>

</body>
</html>

Hi Java forum moderators don't like to see Javascript questions in their forum, so I'll move this to the Javascript forum.

Javascript forum moderators don't like to see code posted without code tags so I'll add those for you.

Jan 25 '07 #2

r035198x

13,262

MVP

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>Dinosa ur Quiz</title>
<script type="text/javascript">

</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="scoreQ uestion1"('a') />Tyrannosaurus< br />
<input type="radio" name="question1 " value="b"
onclick="scoreQ uestion1"('b') />Brachiosaurus< br />
<input type="radio" name="question1 " value="c"
onclick="scoreQ uestion1"('c') />Brontosaurus<b r />
<input type="radio" name="question1 " value="d"
onclick="scoreQ uestion1"('d') />Diplodocus</p>
<p><b>2. When did dinosaurs become extinct?</b></p>
<p><input type="radio" name="question2 " value="a"
onclick="scoreQ uestion2"('a') />1 billion years ago<br />
<input type="radio" name="question2 " value="b"
onclick="scoreQ uestion2"('b') />65 million years ago<br />
<input type="radio" name="question2 " value="c"
onclick="scoreQ uestion2"('c') />10 million years ago<br />
<input type="radio" name="question2 " value="d"
onclick="scoreQ uestion2"('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="scoreQ uestion3"('a') />Megalosaurus<b r />
<input type="radio" name="question3 " value="b"
onclick="scoreQ uestion3"('b') />Apatosaurus< br />
<input type="radio" name="question3 " value="c"
onclick="scoreQ uestion3"('c') />Pterodactyl< br />
<input type="radio" name="question3 " value="d"
onclick="scoreQ uestion3"('d') />Triceratops</p>
<p><b>4. In which period did the Diplodocus live?</b></p>
<p><input type="radio" name="question4 " value="a"
onclick="scoreQ uestion4"('a') />Early Cretaceous<br />
<input type="radio" name="question4 " value="b"
onclick="scoreQ uestion4"('b') />Early Triassic<br />
<input type="radio" name="question4 " value="c"
onclick="scoreQ uestion4"('c') />Late Triassic<br />
<input type="radio" name="question4 " value="d"
onclick="scoreQ uestion4"('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="scoreQ uestion5"('a') />Tryannosaurus< br />
<input type="radio" name="question5 " value="b"
onclick="scoreQ uestion5"('b') />Triceratops< br />
<input type="radio" name="question5 " value="c"
onclick="scoreQ uestion5"('c') />Stegosaurus< br />
<input type="radio" name="question5 " value="d"
onclick="scoreQ uestion5"('d') />Brontosaurus </p>
</form>

</body>
</html>[/HTML]

In your Javascript you are comparing answer with values a,b,c, d but you have not assigned answer to anything. You should first get the value that was selected into answer.

Jan 25 '07 #3

acoder

16,027

Recognized Expert Moderator MVP

You have probably misunderstood the code and are programming the answer checking code incorrectly.

For each function, e.g. scoreQuestion1, you have set the correct answer letter as the argument, e.g. in the case of scoreQuestion1, b. That is fine as long as you use that value to check for the correct answer. Since you are using the answer variable, change each of those letters to answer.

Jan 25 '07 #4

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