Calculating text fields

Question

Hi folks! I am having a problem with my application which i hope you can help me to solve. Basically my application has 6 textfields were the user enters details about costs. I want to have another textfield (total) below these 6 which will show the total sum of these fields. i.e display the total cost...
This (total) textfield will have to be refreshed after the user enters a value into any of the 6 fields. I would prefer not to have the total value stored in my DB, and for it just to be displayed dynamically within the page.. Is this possible?? I would imagine it will require Triggers and mabey some Javascript??.. to be honest im not sure how to approach this. Has anyone got an example they can post me?
any help very much appreciated,
Roddy

Answer 1

<script language = "JavaScript1.1" type = "text/javascript">
calculateTotal() {
var total = 0;
total = html_GetElement('P6_CAP0708').value + html_GetElement('P6_OP0708').value;
html_GetElement('P6_TOTALAWARDED').value = total;
</script>First of all the function should be defined as function calculateTotal.
Try using the following:
<script language = "JavaScript1.1" type = "text/javascript">
function calculateTotal() {
var total = 0;
total = html_GetElement('P6_CAP0708').value + html_GetElement('P6_OP0708').value;
html_GetElement('P6_TOTALAWARDED').value = total;
</script>
Also call the Javascript function by putting the following in the items HTML Form Element Attrinutes entry :
onBlur="javascript:f_calculateTotal()";
NOTE: You will have to use parseFloat function to convert the strings ino numbers before adding otherwise it will concatenate the 2 values. For eg. Instead of giving 1+2 =2 it will give 1+1 = 11.
Hope this helps
Ameya.