Props are passed to the component in the same way as arguments passed in a function. Props are immutable so we cannot modify the props from inside the component. Inside the components, we can add attributes called props. These attributes are available in the component as this.props and can be used to render dynamic data in our render method.
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The Vue team provides what they call props which are custom attributes you can register on any component. The way it works is that you define your data on the parent component and give it a value, then you go to the child component that needs that data and pass the value to a prop attribute so the data becomes a property in the child component. In fact, any prop that is a function that a component uses to know what to render is technically a "render prop.", It turns out that when you place a function inside of a component, this function is also available as props.children. Remember the following lines? I can modify it to make use of the children prop.
This is a best practice of function components that will reduce unnecessary renders of the child components. React.useCallback is used to create a callback closure that's called when the Fluent UI ChoiceGroup value changes. This React hook ensures that the callback closure is only mutated when the input prop onChange is changed. Generally the parent component passes the props values to child components. But in Svelte, there could be a 2-way binding which means a variable defined in both components. In React's unidirectional flow of data, props are the easiest mode to pass data, state and methods from a parent component to a child, and they are read-only. In the example below, the parent.