4 Replies Latest reply on Jan 6, 2018 10:07 AM by Karl Heinz Kremer

    Math.floor does not work

    ericnandoj Level 1

      I need help with this rounding:


      var v3 = (this.getField("valor_for").value-10)/2;

      event.value = Math.floor(v3);


      I need the value of the operation always be rounded down



        • 1. Re: Math.floor does not work
          Karl Heinz Kremer Adobe Community Professional

          Please give some examples of when it’s not working correctly. What values do you enyet, what do you expect as output, and what is the actual output?

          • 2. Re: Math.floor does not work
            ericnandoj Level 1

            When I write the code without Math.floor, the calculation works, for example:


            var v3 = (this.getField("valor_for").value-10)/2;

            event.value = (v3);


                                            valor_for field                                          output of calculation (20-10)/2 = 5




            But when I put Math.floor, nothing happens:


            var v3 = (this.getField("valor_for").value-10)/2;

            event.value = Math.floor(v3);


                                          valor_for field                                            output of calculation (31-10)/2 = 10,5 -

                                                                                                      with Math.floor the result would be 10 right?


            these are my lines of code:




            What's wrong?

            Thank you

            • 3. Re: Math.floor does not work
              Bernd Alheit Adobe Community Professional & MVP

              Check the calculation order.

              • 4. Re: Math.floor does not work
                Karl Heinz Kremer Adobe Community Professional

                A good way to debug these things (besides actually running in the JavaScript debugger and stepping through your code one line at a time) is to add debug output to your script. Add these two lines just after you calculate v3:


                console.println("v3 = " + v3);
                console.println("Math.floor(v3) = " + Math.floor(v3));


                Now you can see what your script does. It works correctly for me.


                If you are not getting the correct results, and if the value of the "valor_for" field is calculated as well, you need to check your calculation order (which is what I think Bernd wanted to say): If the 2nd field gets calculated before the results of the first field are available, then you are working with the previous value, which could explain the behavior you are seeing.