react state vs props

When you need to change the prop value, the child component can send a signal — usually function call when a button is clicked or something similar — to the parent component to change the state. Both features are simply arbitrary variables that you can use to make your React components more dynamic. Props allow you to pass data from one component to other components as an argument. Meaning that a prop’s value can’t be changed no matter what happens. The following example will still output “John” instead of “Mark”: But what if you need variables that might change later? 3. This is because your component call is in JSX syntax, and you need to use curly brackets to write an expression. How to Create a Coin Flipping App using ReactJS? Also, we will see situations where state or props can be used. How to set the default value for an HTML

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