Hey there, why we need to pass “null” as a 2nd argument to React.createElement()?
The React docs linked in the CC lesson explain what arguments createElement() expects:
React.createElement( type, [props], [...children] )
The second argument expects props. If you don’t want to pass any props but children (the text node “Hello, world”) you need to pass null as a second argument. Otherwise the third argument for children is taken as an argument for props.