Community Forum

Hello-

I have a web form to conduct a training exam.

Problem - My script (below) when run posts the sum of the the correct answer whether or not it was chosen

- It has 12 questions and the answers are displayed as radio buttons.
- Each field is labeled Question1, Question2......Question12
- The correct answer for each question has a value of "1" and the incorrect answer has a value of "0".
- At the conclusion of the exam, I have created a button that the user can click to grade the exam. The button script is as follows: <input type="button" value="Grade Exam" onclick="calculate();">

Problem - This script when run posts the sum in the correct field but it currently sums up the correct answers for each question regardless of whether or not they were the chosen answer.

- The calculate function is as follows:

<SCRIPT LANGUAGE="JavaScript">
function calculate()
{
var v_Question1 = document.getElementById('InsertRecordQuestion11');
var Question1 = parseFloat( v_Question1.value ,10 );

var v_Question2 = document.getElementById('InsertRecordQuestion21');
var Question2 = parseFloat( v_Question2.value ,10 );

var v_Question3 = document.getElementById('InsertRecordQuestion32');
var Question3 = parseFloat( v_Question3.value ,10 );

var v_Question4 = document.getElementById('InsertRecordQuestion44');
var Question4 = parseFloat( v_Question4.value ,10 );

var v_Question5 = document.getElementById('InsertRecordQuestion51');
var Question5 = parseFloat( v_Question5.value ,10 );

var v_Question6 = document.getElementById('InsertRecordQuestion60');
var Question6 = parseFloat( v_Question6.value ,10 );

var v_Question7 = document.getElementById('InsertRecordQuestion71');
var Question7 = parseFloat( v_Question7.value ,10 );

var v_Question8 = document.getElementById('InsertRecordQuestion81');
var Question8 = parseFloat( v_Question8.value ,10 );

var v_Question9 = document.getElementById('InsertRecordQuestion92');
var Question9 = parseFloat( v_Question9.value ,10 );

var v_Question10 = document.getElementById('InsertRecordQuestion100');
var Question10 = parseFloat( v_Question10.value ,10 );

var v_Question11 = document.getElementById('InsertRecordQuestion112');
var Question11 = parseFloat( v_Question11.value ,10 );

var v_Question12 = document.getElementById('InsertRecordQuestion122');
var Question12 = parseFloat(v_Question12.value ,10);

var sum = (Question1 + Question2 + Question3 + Question4 + Question5 + Question6 + Question7 + Question8 + Question9 + Question10 + Question11 + Question12);

document.getElementById('InsertRecordSum').value = Math.round(sum);

(document.getElementById('InsertRecordSum').value);
}
</script>


Any help would be greatly appreciated...

Hi,

The way to get the values off of radio buttons is something like the following:

Assuming InsertRecordquestion1 is a radio button -
for (i=0;i<document.form1.question1.length;i++)
{
if (document.form1.InsertRecordquestion1[i].checked)
{
question1_value = document.form1.InsertRecordquestion1[i].value;
}
}

If you could give me the URL of your form, I could look more into your script. Hope this helps.

Best,
-SO

Thank you for your post.

I actually resolved it last night in a similar fashion and added a little logic to acknowledge whether the person passed or failed and render a status to determine whether or not they could print a completion certificate.

Hopefully this can help others as well.

The script is below and still includes my alerts to identify any problem spots:

<SCRIPT LANGUAGE="JavaScript">
function calculate()
{

var Question1 = 0;
if(document.getElementById('InsertRecordQuestion11').checked)
{
Question1 = 1;
}

var Question2 = 0;
if(document.getElementById('InsertRecordQuestion21').checked)
{
Question2 = 1;
}

var Question3 = 0;
if(document.getElementById('InsertRecordQuestion32').checked)
{
Question3 = 1;
}

var Question4 = 0;
if(document.getElementById('InsertRecordQuestion44').checked)
{
Question4 = 1;
}

var Question5 = 0;
if(document.getElementById('InsertRecordQuestion51').checked)
{
Question5 = 1;
}

var Question6 = 0;
if(document.getElementById('InsertRecordQuestion60').checked)
{
Question6 = 1;
}

var Question7 = 0;
if(document.getElementById('InsertRecordQuestion71').checked)
{
Question7 = 1;
}

var Question8 = 0;
if(document.getElementById('InsertRecordQuestion81').checked)
{
Question8 = 1;
}

var Question9 = 0;
if(document.getElementById('InsertRecordQuestion92').checked)
{
Question9 = 1;
}

var Question10 = 0;
if(document.getElementById('InsertRecordQuestion100').checked)
{
Question10 = 1;
}

var Question11 = 0;
if(document.getElementById('InsertRecordQuestion112').checked)
{
Question11 = 1;
}

var Question12 = 0;
if(document.getElementById('InsertRecordQuestion122').checked)
{
Question12 = 1;
}

alert("Before Sum");

var sum = (Question1 + Question2 + Question3 + Question4 + Question5 + Question6 + Question7 + Question8 + Question9 + Question10 + Question11 + Question12);

alert("After Sum");

document.getElementById('InsertRecordSum').value = Math.round(sum);

var total = 12;

alert("Before Result");

var result = (sum / total);

alert("After Result");

document.getElementById('InsertRecordResult').value = Math.round(result*100)/100;

(document.getElementById('InsertRecordSum').value);

alert("Before Status");

var status = "Failed";
if( result >= .85 )
{
status = "PASSED";
}

document.getElementById('InsertRecordStatus').value = (status);

alert("Afer Status");
}

document.getElementById("caspioform").onsubmit=calculate;
</script>

Best Regards.

Hi rowimo,

Great! Good job! And thanks for posting the solution

Best,
-SO

1. The problem statement, all variables and given/known data
I need to calculate the surface tension of jelly (gelatine dessert) or jell-o, as it is known in the states.

My textbook defines surface tension as Y=F/L. Is this the equation I would use to calculate surface tension? If so, how?