Is there an ECMAScript validator, for example for HTML and CSS?
Ideally, I need an automated way to check version 3.0 of this standard.
Try JSLint . By default, it actually checks for more rigorous subsets of ECMAScript 3, but you can switch some options to make it more tolerant. You can also enable ECMAScript 5 constructs if you need it.
You can try JSLint . Or specifically should this be the standard of excreta?