2.5.1 JSON for Structure Values

It is also possible to use JavaScript Object Notation for structures by using string literals for the keys:

var point = { "x" : 1, "y" : -5 };

While any string literal is allowed, the field is only considered part of the type if it is a valid Haxe identifier. Otherwise, Haxe syntax does not allow expressing access to such a field, and reflection has to be employed through the use of Reflect.field and Reflect.setField.