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_.every(collection, [predicate=_.identity])
Checks if predicate
returns truthy for all elements of collection
.
Iteration is stopped once predicate
returns falsey. The predicate is
invoked with three arguments: (value, index|key, collection).
Arguments
- collection (Array|Object)
The collection to iterate over.
- [predicate=_.identity] (Function|Object|string)
The function invoked per iteration.
Returns (boolean)
Returns true
if all elements pass the predicate check, else false
.
Example
_.every([true, 1, null, 'yes'], Boolean);
// => false
var users = [
{ 'user': 'barney', 'active': false },
{ 'user': 'fred', 'active': false }
];
// using the `_.matches` callback shorthand
_.every(users, { 'user': 'barney', 'active': false });
// => false
// using the `_.matchesProperty` callback shorthand
_.every(users, ['active', false]);
// => true
// using the `_.property` callback shorthand
_.every(users, 'active');
// => false