The framework’s popularity has grown in recent years, considered the most popular web framework with the most satisfied developers in surveys conducted by StackOverflow.
No virtual DOM
The main difference is that Svelte is a framework that does not need to use the virtual DOM, which allows React to store the DOM element tree in memory, and when updating in a component , only the specific component is rendered, however, this DOM manipulation process slows down the web application.
Instead, Svelte avoids using the virtual DOM by leveraging its compilation step to wrap state and property changes in functions that can update the DOM in a specific way.
Svelte has a concise, easy and simple syntax for building component-based applications. Its syntax reduces the amount of code to write, where the code in a React component can be around 40% larger than its equivalent in Stelve.