06. Side Effects

Question 1

What are side effects in React and how can they affect component output?

Answer 1

Side effects are operations that interact with external systems (like browser APIs, remote APIs, or HTML elements).

They can affect component output because they’re used to interact with third-party APIs, measure HTML elements, or work with JavaScript functions like timers.

Question 2

How do you initiate state from localStorage?

Answer 2

const App = () => { 

.. const [searchTerm, setSearchTerm] = React.useState(  localStorage.getItem('search') || 'React' ); 

... );