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JavaScript React Basics (2018) Introducing Props Iterating and Rendering with map()

Posted by jlampstack
jlampstack
23,932 Points

Using Explicit Return for this lesson

My code works fine when using an explicit return like the instructor, but for my personal preferences I like seeing the () parenthesis and {} curly braces. But for some reason my UI won't render with explicit return.

Can anyone tell me how to use explicit return for this? Thanks in Advance!

My Explicit Return (Doesn't Work)

{ props.initialPlayers.map( ( player ) => {
     <Player 
         name={ player.name }
         score={ player.score} 
     />
}) }

Instructors Implicit Return (Works)

{ props.initialPlayers.map( player =>
    <Player 
        name={ player.name }
        score={ player.score} 
    />
) }

1 Answer

jlampstack
jlampstack
23,932 Points

Nevermind, I finally figured it out. I never realized you need to use return keyword and a second set of () parenthesis.

This works

{ props.initialPlayers.map( ( player ) => {
     return (
         <Player 
             name={ player.name }
             score={ player.score} 
         />
     );
}) }

Looking at this now it doesn't look as nice and I see why Guil used an implicit return. It looks much nicer.

ankushdharkar
ankushdharkar
7,530 Points

Yes. You're right. Good find You can learn more about the brevity of this fat arrow syntax here: https://teamtreehouse.com/library/introducing-arrow-function-syntax