Trying to sort an object array to display the top 3 items with the highest "score" element

Question

I have a snake game which at the moment displays a ul on the html page with each player and their id, score, kills and length. What I'm trying to do is get that list to have a max of 3 items and going from the highest score, to the lowest.

It's just the sorting the snakes into another array with the top 3 being the ones with the highest score that's the problem. I can store every snake in the topSnakes array just fine, but after I do topSnakes.sort and try and read anything in it, it will come back as undefined. Any help is appreciated.

Possible duplicate of [Javascript object list sorting by object property](http://stackoverflow.com/questions/2466356/javascript-object-list-sorting-by-object-property) — rlemon, Feb 02 '17 at 12:23

Jonas Wilms · Accepted Answer · 2017-01-31T17:08:54.637

1

topSnakes=Object.values(snakes).sort((a,b)=>b.Score-a.Score).slice(0,3);

Sort after Score ( biggest first ), than take the first three elems. Your mistake is in the first loop, wich is unnecessary in my opinion...

edited Jan 31 '17 at 17:08

answered Jan 31 '17 at 16:51

Jonas Wilms

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its giving me the error of Snakes is undefined, should i put topSnakes = topSnakes.sort instead? – Rachel Dockter Jan 31 '17 at 16:55
Yes, @RachelDockter, that is what you should put. Always make sure the variable names match up! – Jhecht Jan 31 '17 at 16:57
@RachelDockter no, its typo as js is typesafe sorry – Jonas Wilms Jan 31 '17 at 16:57
@JHecht nope, topSnakes will be created in that moment, making Rachels whole code useless. Its just a snakes != Snakes thing – Jonas Wilms Jan 31 '17 at 16:59
Ah, gotta love capitalizations! – Jhecht Jan 31 '17 at 17:00
i changed it to topSnakes = topSnakes.sort and its running, theres only 3 items in the leaderboard list but all the values are undefined like kill: undefined. and im not sure why :/ – Rachel Dockter Jan 31 '17 at 17:00
ok if i take out the first for loop and put topSnakes=snakes.sort instead, it wont work as snakes isnt an array its an object so snakes.sort isnt a function – Rachel Dockter Jan 31 '17 at 17:04
@Rachel: but youre saying that snakes is an array ( in your first code block) – Jonas Wilms Jan 31 '17 at 17:05
i think its an array in an object, so its declares as = {} instead of = [] – Rachel Dockter Jan 31 '17 at 17:06

Trying to sort an object array to display the top 3 items with the highest "score" element

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