Run results for: Array HashMap comparison

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:72.0) Gecko/20100101 Firefox/72.0

Browser: Firefox 72

Operating system: Windows

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
HashMap#in	160299500.0 Ops/sec
HashMap#property	224551800.0 Ops/sec
HashMap#hasOwnProperty	165160000.0 Ops/sec
Array#includes	597854.4 Ops/sec

Script Preparation code:

const long_text = "the the the the the Ladies others the six desire age. Bred am soon park past read by lain. As excuse eldest no moment. An delight beloved up garrets am cottage private. The far attachment discovered celebrated decisively surrounded for and. Sir new the particular frequently \
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assistance me especially. For looking two cousins regular amongst. \
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garden result summer set family esteem nay estate. End admiration mrs unreserved discovered comparison especially invitation. \
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of mistress servants am weddings. Age why the therefore education unfeeling for arranging. Above again money own scale maids ham least led. Returned settling produced strongly ecstatic use yourself way. Repulsive extremity enjoyment she perceived nor. \
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me if agreeable. Life lain held calm and true neat she. Much feet each so went no from. Truth began maids linen an mr to after. \
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winter see. Oh be me sure wise sons no. Piqued ye of am spirit regret. Stimulated discretion impossible admiration in particular conviction up. \
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const words = long_text.split(/\s+/);
var array = [];
var hashMap = {};
for (let word of words) {
  array.push(word);
  hashMap[word]= (hashMap[word] || 0) + 1;
}

Tests:

HashMap#in
const result = 'Impression' in hashMap;
HashMap#property
const result = hashMap.Impression;
HashMap#hasOwnProperty
const result = hashMap.hasOwnProperty('Impression');
Array#includes
const result = array.includes('Impression');
Array#indexOf
const result = array.indexOf('Impression') !== -1;

Run results for: Array HashMap comparison

HashMap#in

HashMap#property

HashMap#hasOwnProperty

Array#includes

Array#indexOf