//map/filter

var upper = _.map(obj, function (value, key) {

    return value.toUpperCase();

});

//every / some

var r1 = _.every(obj, function (value, key) {

    return /^[^A-Z]+$/.test(key)&&/^[^A-Z]+$/.test(value);

});

var r2 = _.some(obj, function (value, key) {

    return /[a-z]/.test(value)||/[a-z]/.test(key);

});