Check if a collection has truthy values for keys

hasEvery.lodash.js

//to validate if a collection has all the desired keys and they are truthy:

var hasEvery = function(desiredKeys, collection) {
    return _.all(desiredKeys, _.result.bind(collection, collection));
};

var desiredKeys = ['hello', 'there', 'isIt'];
var collection = { hello: 1, there: 1, isIt: true};
hasEvery(desiredKeys, collection);
//-> true

collection.isIt = false;
hasEvery(desiredKeys, collection);
//-> false

desiredKeys = ['hello', 'me'];
hasEvery(desiredKeys, collection);
//-> false