I can’t find anything on this and I was wondering:
calling arrayfromargs(), what is actually returned? If I do var myAwesomeArray = arrayfromargs(arguments); is "myAwesomeArray" a reference to "arrayfromargs" or is it the equivalent of doing something like: myAwesomeArray = myOtherNoteQuiteAsAwesomeArray.slice();
Hope someone can clarify or point me to the documentation.
It creates a new Array object, copying the content of arguments. The arguments object is an Array object, though it supports array style indexing. This is a convenience function so that people who want to call Array object methods can do so, without having to do that copying to an actual Array object in JS.
arrayfromargs() creates a new array (by copying, not reference) of "arguments". this means when I assign it to something like newArray = arrayfromargs(arguments); newArray is now referencing the array created by arrayfromargs(). If I send another list to my function, a new array is created and, let’s say put in newArray, but since everything is done by copying already,  and  are pointing to two different arrays in memory.
Yes. Please let us know if you experience otherwise.