The new Uize.Data.isEmpty method (implemented in the Uize.Data module) returns a boolean value, indicating whether or not the specified object or array is empty.

This method will return true for the values {}, [], '', 0, false, null, undefined, NaN, and will return false for the values {blah:1}, ['blah'], 'blah', 1, true, /^.+$/, and function () {}.