var utils = {};

        // Could create a utility function to do this

        utils.searchInArray = function (lookUpArray, caseSensitiveSearch) {

            if (!lookUpArray || lookUpArray.length < 0)

                return null;

​

            caseSensitiveSearch = caseSensitiveSearch || false;

            var self = this;

            var item = null;

            for (var index = 0; index < self.length; index++) {

                item = self[index];

                var exist = true;

                for (var i = 0; i < lookUpArray.length; i++) {

                    if (item[lookUpArray[i].key] === lookUpArray[i].value) {

                        exist = exist * true;

                    } else { exist = exist * false; }

                }

                if (exist)

                    return item;

            };

            return exist ? item : null;

        };

​

        // or we could create a function on the Array prototype indirectly

        Array.prototype.excSearchObjArrayForKeyValue = utils.searchInArray;

​

​

​

        var emails = [

            { emailType: 'primary', id: 1, username: 'saurabh', email: 'test@gmail.com', phone: '123' },

            { emailType: 'additional', id: 2, email: 'test2@gmail.com' },

            { emailType: 'additional', id: 2, email: 'test2@gmail.com', username:'spp' }

        ];

        var lookUpArray = [{ key: 'emailType', value: 'additional' }, { key: 'id', value: 2 }];

​

        var result = emails.excSearchObjArrayForKeyValue(lookUpArray);

        console.log(result);