react if block code example

Example 1: jsx if block

render () {
  return (
    

      {(() => {
        if (someCase) {
          return (
            
someCase
          )
        } else if (otherCase) {
          return (
            
otherCase
          )
        } else {
          return (
            
catch all
          )
        }
      })()}
    
  )
}

Example 2: ternary react

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

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

Example 3: react native conditional rendering

function Mailbox(props) {
  const unreadMessages = props.unreadMessages;
  return (
    

      
Hello!
      {unreadMessages.length > 0 &&
        

          You have {unreadMessages.length} unread messages.
        
      }
    
  );
}

Example 4: inline if in html component

Condition ? Block_For_True : Block_For_False

Example 5: react if statement

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

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