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Message: [QUOTE="John G Harris, post: 4979977"] You use 'new' to create an object, not a class. This is just as true in Java as in javascript. In general, a class is the collection of all possible objects that have something particular in common. In Java you have class definitions, source text that starts with the keyword 'class', that says what the objects have in common. The definition can also supply additional information such as a name for the class. Javascript is less helpful. You often have to program yourself things that are done by the compiler in other languages. If you want a class definition you have to write it yourself in the form of a constructor function (maybe more than one) and have enough self-discipline to avoid building a horrible mess. If you don't need all the facilities that a constructor function can provide then you may be able to use an object literal instead. In Java, myJar holds a pointer to an area in memory that holds the object's data, etc. 'new' allocates a fresh memory area and arranges for the constructor to act on that area. From then on you can write myJar when you really mean thing-pointed-to-by-myJar. The same is true in javascript. <snip> This doesn't work in Java either. Constructors don't have return type and so can't be used to assign a value to a variable. John [/QUOTE]