radio or checkbox

[Dormilich]

when i click on the heckbox it reloads the page and just writes the sum on a blank page

I’d need something to see to make a qualified comment.

[colinod]

if you men the actual pages try

http://www.yaketyyak.co.uk/radiousefee/news.asp

check some boxes and then go to the national page thats where i am trying things at the moment

[colinod]

sorted it change the

document.write("<%= runtotal %>")

to

"<%= runtotal %>"

i am now getting object does'nt support this propert or method in line 36 char 3

document.getElementById('total').value = sum.toFixed(2);

[Dormilich]

i am now getting object does'nt support this propert or method in line 36 char 3

well, you try to access a Number method on a String object. this does not work.

[colinod]

i think you have lost me there!!!

[Dormilich]

try the following before that line

alert(typeof sum);

[colinod]

i gather this is string because of the fact i have made it from asp variables is there a way of converting it?

I have tried adding parsfloat('sum' "); in the line before but it still says its a string

[Dormilich]

because the function is called parseFloat(). you could also leave off the quotation marks, would be the same.

[colinod]

sorry that was my typing in the forum, what i actually have is theis

parseFloat('sum ');
alert(typeof sum);

but it still says its a string, i have tried it without the quotes also

[Dormilich]

you are aware, that 'sum' is not the variable?

[colinod]

no i was not, just cant get this javascript, but am slowly learning, weird that i know asp though??

[Dormilich]

you don't want me to tell what I think of ASP ...

[colinod]

probably the same as me and javascript, what is the variable i really thought sum held the total

[Dormilich]

the variable is named sum just not within quotation marks, that would be then a string literal.

[colinod]

thanks for your help with all that, finally got it working and moving totals from page to page, i still have the same problem if you reset the form its not a problem but i was going to add a button to reset the total also but that does not want to work

the code for adding is now

function UpdateCost() {
  var sum = <%= runtotal %>;
  var gn, elem;
  for (i=0; i<5; i++) {
    gn = 'id'+i;
    elem = document.getElementById(gn);
    if (elem.checked == true) { sum += Number(elem.value); }
  }
  parseFloat(sum);
  document.getElementById('total').value = sum.toFixed(2);
}

i have a feeling i have just gone round in a circle to end up with the same problem though