ColdFusion isDefined

Question

I am trying to check to see if data exist in my form If data does not exist I want to assign it to O. How can I do this.

Answer 1

There are actually two things you want to to ensure. First, make sure this page was arrived at by submitting the proper form. Next, ensure you have a numeric value for the form.age variable. Here is an example of how you might want to code this:

    
        
    
        
    
    ...more code to process form

    ...code for when page was not arrived at properly