React Interview Question: What gets rendered in the browser, a component or an element? - Online Free Computer Tutorials.

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Monday, June 25, 2018

React Interview Question: What gets rendered in the browser, a component or an element?

** Trick Question **You might not like the answer because, unfortunately, it is a bit complicated.Isn't the word element synonymous to the word component anyway??Form reactjs.orgTechnically speaking, ReactDOM does not render a React component or a React element in the DOM. It renders DOM elements backed by instances of their components. This is true for class components. For function components, ReactDOM renders just DOM elements. Function components don't have instances (that can be accessed with this) so when using a function component, ReactDOM renders a DOM element generated from the function's returned element.What you need to understand here is that a React element is different from a DOM element.


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