Javascript filter function must be always written on one line?

Question

I spend some time figuring out what was the problem with this

arr.filter((order)=>{
   order.trackingNumbers.some((track)=>{
      track.number==search
   })
})

and then noticed that it works if is written in just one line

arr.filter(order=>order.trackingNumbers.some(track=>track.number==search))

why is that and is posible to write it on several lines?

It's the braces: https://stackoverflow.com/questions/35440265/curly-brackets-in-arrow-functions — mrmcgreg, Aug 20 '20 at 02:35

score 3 · Accepted Answer · answered Aug 20 '20 at 02:35

3

arr.filter((order)=>{
   return order.trackingNumbers.some((track)=>{
      return track.number==search
   })
})

you can omit return keyword when you're omitting bracket thats why the single line works

answered Aug 20 '20 at 02:35

arslan2012

1 Answers1