Let's say I have the following object:
const a = {a: 1, 0: 2};
delete a.a; // this works
delete a.0; // this errors (I suppose expecting a['0'] and not a[0])
Does the method deletion form of obj.key only allow deletion of a string key? And if it's a non-string type, is the only way of doing deletion via the key lookup method of obj[key] ?
According to MDN:
In the
object.propertysyntax, the property must be a valid JavaScript identifier.
... where ...
... identifiers are case-sensitive and can contain Unicode letters,
$,_, and digits (0-9), but may not start with a digit.
So, answering your question, property with name 0 can be only accessed with key notation.