I would like to know how to do that:
I have some <input type="text"> where users logged in write some numbers.
First, my idea was to make like a sample unusual dynamic calculator. When the user load the page, some queries are made and it's no matter to me to get the value of four specific fields which contain numbers.
For instance, if the logged user had:
Field1: 56 Filed2: 45 Field3: 90 Field4:0
and he fills one of the <input type="text" name="apple"> with a number, without reload the page i would like that the calculator window decreases the field1 to 40 and the field 3 to 80.
So the user could see this:
Window Calculator:
Initial: Field1: 56 Filed2: 45 Field3: 90 Field4:0
Current: Field1: 40 Filed2: 45 Field3: 80 Field4:0
1 apple
and do the same for all the <input type="text" name="fruit">
