Run results for: Regex match() array vs matchAll() iterator

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:102.0) Gecko/20100101 Firefox/102.0

Browser: Firefox 102

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
match	43464.6 Ops/sec
matchAll	30287.3 Ops/sec

Script Preparation code:

var re = /\w+/g
var text = `Miss Brooke had that kind of beauty which seems to be thrown into
relief by poor dress. Her hand and wrist were so finely formed that she
could wear sleeves not less bare of style than those in which the
Blessed Virgin appeared to Italian painters; and her profile as well as
her stature and bearing seemed to gain the more dignity from her plain
garments, which by the side of provincial fashion gave her the
impressiveness of a fine quotation from the Bible,—or from one of our
elder poets,—in a paragraph of to-day’s newspaper. She was usually
spoken of as being remarkably clever, but with the addition that her
sister Celia had more common-sense. Nevertheless, Celia wore scarcely
more trimmings; and it was only to close observers that her dress
differed from her sister’s, and had a shade of coquetry in its
arrangements; for Miss Brooke’s plain dressing was due to mixed
conditions, in most of which her sister shared. The pride of being
ladies had something to do with it: the Brooke connections, though not
exactly aristocratic, were unquestionably “good:” if you inquired
backward for a generation or two, you would not find any yard-measuring
or parcel-tying forefathers—anything lower than an admiral or a
clergyman; and there was even an ancestor discernible as a Puritan
gentleman who served under Cromwell, but afterwards conformed, and
managed to come out of all political troubles as the proprietor of a
respectable family estate. Young women of such birth, living in a quiet
country-house, and attending a village church hardly larger than a
parlor, naturally regarded frippery as the ambition of a huckster’s
daughter. Then there was well-bred economy, which in those days made
show in dress the first item to be deducted from, when any margin was
required for expenses more distinctive of rank. Such reasons would have
been enough to account for plain dress, quite apart from religious
feeling; but in Miss Brooke’s case, religion alone would have
determined it; and Celia mildly acquiesced in all her sister’s
sentiments, only infusing them with that common-sense which is able to
accept momentous doctrines without any eccentric agitation. Dorothea
knew many passages of Pascal’s Pensees and of Jeremy Taylor by heart;
and to her the destinies of mankind, seen by the light of Christianity,
made the solicitudes of feminine fashion appear an occupation for
Bedlam. She could not reconcile the anxieties of a spiritual life
involving eternal consequences, with a keen interest in gimp and
artificial protrusions of drapery. Her mind was theoretic, and yearned
by its nature after some lofty conception of the world which might
frankly include the parish of Tipton and her own rule of conduct there;
she was enamoured of intensity and greatness, and rash in embracing
whatever seemed to her to have those aspects; likely to seek martyrdom,
to make retractations, and then to incur martyrdom after all in a
quarter where she had not sought it. Certainly such elements in the
character of a marriageable girl tended to interfere with her lot, and
hinder it from being decided according to custom, by good looks,
vanity, and merely canine affection. With all this, she, the elder of
the sisters, was not yet twenty, and they had both been educated, since
they were about twelve years old and had lost their parents, on plans
at once narrow and promiscuous, first in an English family and
afterwards in a Swiss family at Lausanne, their bachelor uncle and
guardian trying in this way to remedy the disadvantages of their
orphaned condition.`

Tests:

match
(text.match(re) || []).length
matchAll
[...text.matchAll(re)].length