Answer - Props are inputs to components. They are single values or objects containing a set of values that are passed to components on creation using a naming convention similar to HTML-tag attributes. They are data passed down from a parent component to a child component. The primary purpose of props in React is to provide following component functionality: . Pass custom data to your component. i. Trigger state changes. ii. Use via this.props.reactProp inside component's render() method. For example, let us create an element with reactProp property: This reactProp (or whatever you came up with) name then becomes a property attached to React's native props object which originally already exists on all components created using React library. props.reactProp