Too Long; Didn't Read
Svelte: Communication Between Components - a callback and event dispatcher. A callback method is the way you do communication between components in React.js. A parent component passes a callback method to a child, and then, child invokes it. In this type of communication, a component triggers some events on it's self and then someone (a parent component) will listen to it and do something once triggered. Sveltte allows you to use both of them (as Vue does)