You'll probably want to check out "Static semantics: VarScopedDeclarations" ( https://262.ecma-international.org/#sec-static-semantics-varscopeddeclarations ) and its usage in https://262.ecma-international.org/#sec-globaldeclarationinstantiation . Let us know if that didn't help (or if it did) :)
On Fri, Jul 7, 2023 at 9:58 AM Shang Yu <yus...@gmail.com> wrote: > Hi guys, > I'm reading 14.3.2.1 > <https://262.ecma-international.org/#sec-variable-statement-runtime-semantics-evaluation> > section > of ecma232 and trying to find out how the following code is evaluated. > *var x *// A > according to the following part of 14.3.2.1 > > VariableDeclaration : BindingIdentifier > 1. Return empty. > > It seems the code at line A will be a non-op, that is it will do nothing. > If this is right, the following code should not run in my understanding, > but it did run, how does this happen? Many thanks ! > > ‘use strict’ > var x > x=0 > > -- > -- > v8-dev mailing list > v8-dev@googlegroups.com > http://groups.google.com/group/v8-dev > --- > You received this message because you are subscribed to the Google Groups > "v8-dev" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to v8-dev+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/v8-dev/d20e9269-8ee5-4030-a342-20ee1887078en%40googlegroups.com > <https://groups.google.com/d/msgid/v8-dev/d20e9269-8ee5-4030-a342-20ee1887078en%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- Google Germany GmbH Erika-Mann-Straße 33 80636 München Geschäftsführer: Paul Manicle, Liana Sebastian. Registergericht und -nummer: Hamburg, HRB 86891 Sitz der Gesellschaft: Hamburg Diese E-Mail ist vertraulich. Falls sie diese fälschlicherweise erhalten haben sollten, leiten Sie diese bitte nicht an jemand anderes weiter, löschen Sie alle Kopien und Anhänge davon und lassen Sie mich bitte wissen, dass die E-Mail an die falsche Person gesendet wurde. This e-mail is confidential. If you received this communication by mistake, please don't forward it to anyone else, please erase all copies and attachments, and please let me know that it has gone to the wrong person. -- -- v8-dev mailing list v8-dev@googlegroups.com http://groups.google.com/group/v8-dev --- You received this message because you are subscribed to the Google Groups "v8-dev" group. To unsubscribe from this group and stop receiving emails from it, send an email to v8-dev+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/v8-dev/CAED6dUC-Utn%2BKtG7iHtSfgfinFo_ZbFGVprSVnnKc-Jh9LNZbw%40mail.gmail.com.
