ops. Đoạn script của cậu vừa thừa lại vừa thiếu ._.
thử dùng đoạn này xem:
-------------------------------------------
<script language="JavaScript">
function tester() {
var a = 0
var b = 0
var c = 0
if(document.forms[0].elements[1].checked==true) {
a = 1
}
if(document.forms[0].elements[3].checked==true) {
b = 1
}
if(document.forms[0].elements[8].checked==true) {
c = 1
}
total = a + b + c
grade = 33*total
if (total==3){
alert("Your grade is 100% correct. Great Job!")
}
if (total < 3){
alert("Your grade is "+ grade +"% correct.")
}
}
</script>
---------------------------------------------
Form thì như thế này:
<form method="get" onsubmit="tester()">
<h4>1. What does "WBT" stand for?</h4>
<p><input type="radio" checked name="R1" value="V1">a. World Boxing Association.</p>
<p><input type="radio" name="R1" value="V2">b. Web-Based Training. </p>
<p><input type="radio" name="R1" value="V3">c. Why Bother Testing?</p>
<p> </p>
<hr>
<h4>2. What is JavaScript?</h4>
<p><input type="radio" name="R2" value="V4">a. A programming language used with HTML.</p>
<p><input type="radio" name="R2" value="V5">b. The same as Java code.</p>
<p><input type="radio" name="R2" value="V6">c. The script used in the country Java.</p>
<p> </p>
<hr>
<h4>3. Why use multiple choice tests in WBT?</h4>
<p><input type="radio" name="R3" value="V7">a. To be different than regular tests.</p>
<p><input type="radio" name="R3" value="V8">b. To cause confusion among the students. </p>
<p><input type="radio" name="R3" value="V9">c. It is easier to program and control. </p>
<p> </p>
<hr>
<div align="center"><center><p><input type="submit" value="Get Score"></p>
</center></div>
</form>
Đoạn mã này hơi khác. Các checkbox sai thì nó kệ. Các check đúng nó cộng cho 1 điểm. Thích có cả đáp án thì sửa lại cái alert() 1 chút.
