react operator !! code example

Example 1: ternary react

render() {
  const isLoggedIn = this.state.isLoggedIn;
  return (
    

      The user is {isLoggedIn ? 'currently' : 'not'} logged in.    
	
  );
}

Example 2: javascript in jsx

const name = 'Josh Perez';
const element = 
Hello, {name}
;
//notice the use of {...} to jump from jsx to javascript.
ReactDOM.render(
  element,
  document.getElementById('root')
);