Question

I have a form with a text box that has its value changed from a function. How would I create a function based on the value changing from the script and not the user “clicking” or manually changing the value?

I have this:

$(document).ready(function() {
    $('#ShippingCost').live({
        change: function() { 

alert('changed!');
        }
     });
});

But it only works when a user changes it manually.

Answer 1

You will need to call the change yourself in the code which updates the value:

$('#ShippingCost').val("something")
                  .change();  // this will execute the change code

Changing values through javascript does not fire events.