JavaScript question - how do you calculate specific fields

[davidmb1976]

I am new to Java Script and am trying to work out the following

I have a form with radio buttons.  And a variety of skills observations. Each observation has been marked as a group with different values 0, 1 or 2 depending on the level.

I would like my total box to calculate the number of times the '2' button has been selected and '1' button etc. Help!!!

[try67]

What are the names of the radio buttons?

[davidmb1976]

I have named each group after the question number for example question 1 = group 1 and each have 3 values '2' , '1' and '0' does that help?

[try67]

So it's "question 1", "question 2", etc.? How many such questions are there?

[davidmb1976]

yes it is question 1 - group 1 with 3 options going down to question number 28.

[try67]

OK, so to count the number of times "2" is selected, for example, you can use this code as the custom calculation script of a text field that will display the result:

var total = 0;
for (var i=1; i<=28; i++) {
    var f = this.getField("question "+i);
    if (f.valueAsString=="2") total++;
}
event.value = total;

[davidmb1976]

thank you , can you tell me what the 'i' and 'f' is and presumably on this getField ("question "+i) I can change question to the name of the field? Sorry trying to get my head around javascript as have a design background not programming.

[try67]

The "i" variable is a counter. The "f" variable points to a Field object.

If the fields are really named "question 1", "question 2", etc., as you said, then you should not change it.

Your replies on this were not very clear, I have to say... If they are named "group 1", "group 2", etc., then change it to "group "...

[davidmb1976]

Sorry, yes it was group ... thank you it works a treat. Thank you for your help with this.