coffeescript array finding next position

Question

I have an array setup like the following:

services = ['times', 'food', 'messages', 'share']

And I would like to be able to pass into services 'times' and have it return the next position in the array i.e. 'food'

Mitya · Accepted Answer · 2012-07-02 08:47:07Z

1

nextPos = services.indexOf('times');

This is JS, but also valid in CoffeeScript. Note, though, that if used outside of CofeeScript, it's an ECMA5 addition, so won't work in older browsers (EDIT - as the comment says, this of course means IE <= 8).

edited Jul 2, 2012 at 8:47

answered Jun 30, 2012 at 23:13

Mitya

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3 Comments

Fabrício Matté Over a year ago

More specifically, it won't work in IE 8 and below. Reference

hvgotcodes Over a year ago

I would do nextPost = services.indexOf 'times' to make it more CS-esque

Aaron Dufour Over a year ago

This is not valid CoffeeScript. var isn't a legal token.

elclanrs · Accepted Answer · 2012-06-30 23:21:36Z

1

Based on Utkanos answer but in CS:

getNext = (arr, key) ->
    arr[arr.indexOf(key) + 1]
console.log getNext services, 'times' # food

edited Jun 30, 2012 at 23:21

answered Jun 30, 2012 at 23:13

elclanrs

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