In this article the author compares crucial technical aspects of the two present-day frameworks. Whereby, you can get to know, which framework holds the edge in considered attributes.
Virtual DOM is a feature of Vue.js and other major frameworks but often there is some confusion between Virtual and not, so some clarification is needed
An article on JavaScript Promises. A Promise is a feature implemented in ES2015. The idea behind it is based on callback logic, but the final result is quite different.