Autovivification and Javascript

Question

Does autovivification only have to do with \"derefencing\" undefined structures, because in JavaScript if you specify a index or a property that doesn\'t exist won\'t it dyn

Answer 1

Namespacing is one area where autovivification might be handy in JavaScript. Currently to "namespace" an object, you have to do this:

var foo = { bar: { baz: {} } };
foo.bar.baz.myValue = 1;

Were autovivification supported by JavaScript, the first line would not be necessary. The ability to add arbitrary properties to objects in JavaScript is due to its being a dynamic language, but is not quite autovivification.