React.js allows developers to create extremely complex user interfaces and with that complexity comes performance hits. In order to mitigate performance issues that arise when complex JavaScript is executed in a user’s browser while at the same time manipulating the HTML DOM at the same time, React.js uses what is called a “Virtual DOM”.

In this video, we dive into how the React.js virtual DOM works and why it is important to the performance of React.js in users’ browsers.

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