checkbox and text fields

torosco

Hi, I need help with the following:
I have pairs checkboxes and textfields. I want to implement a calculator type thing... if the checkbox is checked then I want to add the amount indicated by the user in the text field in a total amount. EX:
[X] [100 ]
[ ] [ ]
[X] [100 ]
Total: 200

I used the following code for the FIRST checkbox and text field:
<INPUT type=checkbox value="1" name="Checkbox1">
<input type="text" name="Total1" size="5" value="<? print("$Total1"); ?>">
and this code between </Head> and <body>
<?
if($Checkbox== "1"){
$TotalAmount = $TotalAmount +$Total1;
} ?>
I get the following errors:
1) inside the text field: Undeclared variable $Total1
2) undeclared variable $Checkbox

Thanx

autumn

I would use Javascript for something like this. Much easier and saves you from having to reload the whole page.

As for your code, when using multiple checkboxes you need to create an array by calling each something like check[1] and check[2] then on the next page/page reload you can grab the value from each array and do your calculations.

Again, JS is your friends here.

antoinep

the name si $Checkbox1, so the value is $$Checkbox1

<INPUT type=checkbox value="1" name="Checkbox1">
<input type="text" name="Total1" size="5" value="<? print("$Total1"); ?>">
and this code between </Head> and <body>
<?
$TotalAmount=0;
if($$Checkbox1== "1"){
$TotalAmount = $TotalAmount +$$Checkbox1;
} ?>