There's a reason data binding is popular with the JS crowd, and it's the same reason it's been somewhat popular with the big enterprise crowd. When your applica

There's a reason data binding is popular with the JS crowd, and it's the same reason it's been somewhat popular with the big enterprise crowd. When your application starts getting very complicated, such as the user changing an input field that is reflected in a bunch of dynamic calculations across the app, it becomes desirable to simply change one value and have everything update. This is only desirable if your application is big enough that it's not just easier to re-run every calculation manually. Big enterprise has had this problem for a long time in their big multi window monster apps they use for stock trading, etc. JS webapps have been very simple for a long time and haven't really needed it until recently. Now that they're getting complex, JS devs are looking into how to solve the problem and it generally comes down to MVC OOP style or FP style. You can see these two derivatives in AnglularJS and ReactiveJS.