The Uize.clone static method of the Uize module has been improved with better handling of window and DOM objects encountered within arbitrarily complex data structures.

The Uize.clone method was previously not able to handle cloning a data object that contained a property whose value was a reference to the window object or a DOM node. This is because the window object and DOM nodes contain properties that refer back to themselves. Cloning of data structures containing window object or DOM object references would result in an infinite loop. With the new behavior, any object reference that is not an instance of JavaScript's built-in RegExp, Date, String, Number, or Boolean objects will be copied by reference only, so the properties of window and DOM objects will no longer be traversed. This doesn't mean that window or DOM objects will be cloned - they won't. It simply means that cloning data structures that contain references to these types of objects won't result in JavaScript code hanging.

The Uize.Data.identical static method of the Uize.Data module has been improved with better handling of JavaScript's built-in objects when comparing arbitrarily complex data structures.

The Uize.Data.identical method was previously not able to handle comparing instances of JavaScript's built-in RegExp, Number, or Boolean objects. In fact, comparison of two regular expression instances would always report them as being identical - even if they had completely different patterns or options. So, for example, the statement Uize.Data.identical (new RegExp ('foo'),new RegExp ('bar')) would produce the result true. This problem has been addressed, and instances of the RegExp, Number, Boolean objects are now only considered identical if they have the same value. With the new behavior, the statement Uize.Data.identical (new Boolean (false),new Boolean (true)) will produce the result false, while the statement Uize.Data.identical (new Boolean (false),new Boolean (false)) will produce the result true.

As part of this update, a thorough unit test has been created for the Uize.clone method, and the existing unit test for the Uize.Data.identical method has been updated to test the new behavior.