Collection iteration cheat sheet

Having not found a great cheat sheet between Linq and JavaScript Array methods I thought I would create one. The JS Array methods I have included here are supported from IE9 so I imagine most applications should be able to use them (and if not the Mozilla Developer Network provides some polyfills).

Be aware that chaining methods on the Array prototype will cause the collection to be iterated many times (unlike LINQ which will iterate once when the collection is enumerated). This is because each method returns a new array.

Underscore allows single iteration chaining by using the chain and value methods.

LINQ	JS Array (ES6)	Underscore (ES6)	jQuery (ES6)
Any	some	some	N/A
All	every	every	N/A
Select	map	map	map
Where	filter	filter	grep
First/FirstOrDefault	find	find	N/A
	forEach	each	each
Max	N/A	max	N/A
Min	N/A	min	N/A
ToDictionary	N/A	groupBy	N/A
Contains	includes	contains	N/A
N/A	findIndex	indexOf	inArray
Reverse	reverse	N/A	N/A
String.Join	["One", "Two"].join(", ")	N/A	N/A

If I have missed anything please comment below and I will update the list.