Run results for: Forloop vs indexOf

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.79 Safari/537.36

Browser: Chrome 61

Operating system: Linux

Device Platform: Other

Date tested: 6 years ago

Test name	Executions per second
For loop	19541.5 Ops/sec
IndexOf	1290975.0 Ops/sec

Script Preparation code:

var wikiEntry = 'Boogeyman 2 is a 2007 American supernatural horror film edited and directed by Jeff Betancourt and the sequel to the 2005 film Boogeyman. The film was written by Brian Sieve and stars Danielle Savre, Matt Cohen, Tobin Bell and Renee OConnor. Savre portrays Laura Porter, a woman who witnessed her parents murder alongside her brother as a child. She believes the killer to be the Boogeyman, and now as an adult seeks group therapy to overcome her phobia of the creature. However, her fears become reality as her fellow patients are murdered one by one. Due to the previous films financial success, Boogeyman 2 was announced in October 2006. Production of the film began in the same month with the hiring of Betancourt as director and Sieve attached as writer. Casting began in December of the same year with the hiring of OConnor; Savre got the lead role in January 2007. Filming took place in Los Angeles at the former hospital, Linda Vista Community Hospital, over a four-month period, beginning in January 2007 and concluding in April. Unlike the original film, which featured the Boogeyman as a supernatural entity, Betancourt strove to present a more grounded and realistic version of the mythical creature. Additionally, emphasis was placed on the writing and atmosphere to compensate for the films small $4.5 million budget. After screening at the Screamfest Horror Film Festival on October 20, 2007, Boogeyman 2 was released direct-to-video in the United States on January 8, 2008; it was later released theatrically in Russia and Italy. It received mixed reviews from critics, although many of them considered it to be a general improvement over its predecessor. Attention was especially given to the human-like nature of the Boogeyman in the film, which reviewers felt was preferable to monsters in other contemporary creature features, including the previous film. Despite a mediocre commercial performance, recouping slightly less than its budget, the film received a sequel, Boogeyman 3, the following year';
var testArray = wikiEntry.split(' ');
var searchTerm = 'contemporary';

Tests:

For loop
for( var i = 0, len = testArray.length; i < len; i++) { if (testArray[i] === searchTerm) { return true; } } return false;
IndexOf
return testArray.indexOf(searchTerm) > -1;

Run results for: Forloop vs indexOf

For loop

IndexOf