mtcmedia
03-02-2003, 09:03 AM
Hi All,
I am trying to write a simple javascript form. I want it so that when someone ticks a checkbox, it will then update another field by multiplying two other fields together. Hope that makes sence, here is what I have so far:
<script language="JavaScript">
function validate_form(){
//=========================================================
//Begin Work Out Cost Box 1
if (beaver_form.item1.checked)
{
document.beaver_form.cost1.value = ('£'+(document.beaver_form.qu1.value*document.beaver_form.pi1.value)+'.00');
return false;
}
//End Work Out Cost Box 1
//=========================================================
return (true);
}
</script>
The field I want to update, cost1 is defined as:
<INPUT size=7 name=cost1>
What am I doing wrong? I am currently trying to update the field when the submit button is clicked, but i would prefer if the cost1 field updated as soon as they ticked the box. Is this possible? Thank you in advance, and sorry if this is a stupid question!
I am trying to write a simple javascript form. I want it so that when someone ticks a checkbox, it will then update another field by multiplying two other fields together. Hope that makes sence, here is what I have so far:
<script language="JavaScript">
function validate_form(){
//=========================================================
//Begin Work Out Cost Box 1
if (beaver_form.item1.checked)
{
document.beaver_form.cost1.value = ('£'+(document.beaver_form.qu1.value*document.beaver_form.pi1.value)+'.00');
return false;
}
//End Work Out Cost Box 1
//=========================================================
return (true);
}
</script>
The field I want to update, cost1 is defined as:
<INPUT size=7 name=cost1>
What am I doing wrong? I am currently trying to update the field when the submit button is clicked, but i would prefer if the cost1 field updated as soon as they ticked the box. Is this possible? Thank you in advance, and sorry if this is a stupid question!