Props in React JS is a special keyword, short form for properties. In simple words, Props is to pass data from one component to another component. Props can be passed like function arguments to components. Props are unidirectional i.e. props can be passed to components in only one way like in inheritance. Props data is immutable i.e. cannot change the data (read-only data).
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You can watch this video on React JS course for beginners to know about Props with an example: