JavaScript/jQuery equivalent of LINQ Any()

Question

Is there an equivalent of IEnumerable.Any(Predicate<T>) in JavaScript or jQuery?

I am validating a list of items, and want to break early if error is detected. I could do it using $.each, but I need to use an external flag to see if the item was actually found:

var found = false; $.each(array, function(i) {     if (notValid(array[i])) {         found = true;     }     return !found; }); 

What would be a better way? I don't like using plain for with JavaScript arrays because it iterates over all of its members, not just values.

Answer 1

These days you could actually use Array.prototype.some (specced in ES5) to get the same effect:

array.some(function(item) {     return notValid(item); });