Equivalent to LINQ's Enumerable.First(predicate)
No need to reinvent the wheel, the correct way to do it is to use .find:
var firstMatch = ['a', 'b', 'c'].find(applyConditions);If you're using a browser that does not support .find you can polyfill it
You could emulate this in the case where you want to return the first truthy value with reduce.
['a', 'b', 'c'].reduce(function(prev, curr) { return prev || predicate(curr) && curr; }, false);edit: made more terse with @BenjaminGruenbaum suggestion
LINQ users call first and firstOrDefault a lot with no predicate, which is not possible with find. So,
first() { var firstOrDefault = this.firstOrDefault(); if(firstOrDefault !== undefined) return firstOrDefault; else throw new Error('No element satisfies the condition in predicate.'); } firstOrDefault() { return this.find(o => true); }