Adding 2 textbox values together

I want the value of "total.text to change when a user selects a value from a drop down menu. I am building a form that has several drop down menus on it and the value for “yes” is 100 and value for “no” is 0. I want the total point value in total.text to increase in value when a they select yes or no, so the the total point value is saved in DB at the same time as their selections so the addition needs to happen on each dropdown change. I am new to Javascript and everything I have tried comes up with errors in the code.

Dropdown 1 = yes (100)
Dropdown 2 = no (0)
Dropdown 3 = yes(100)

Total points = 200

Hi,
Firstly, you should set the dropdown option values:


Than, you can get the selected option value as explained here , sum the results and set it to a text component as explained here .

Good luck,
Tal.

Wix has updated and changed a lot of its features over the years.
Is there an updated way to complete this task?
Possibly a way to do this without using developer mode?

Thank you!