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YURII DE.
YURII DE.

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How to Check if an Object is Empty in JavaScript (benchmark)

#javascript #webdev #testing #programming

Using Object.keys()

169,635 ±1.83% 2% slower

function isEmptyObject(obj) { return Object.keys(obj).length === 0; }
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Using for...in loop (WON)

172,973 ±0.97% fastest

function isEmptyObject(obj) { for (let key in obj) { if (obj.hasOwnProperty(key)) { return false; } } return true; }
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Using JSON.stringify

164,737 ±0.83% 5% slower

function isEmptyObject(obj) { return JSON.stringify(obj) === '{}'; }
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Using Object.entries()

169,838 ±1.34% 2% slower

function isEmptyObject(obj) { return Object.entries(obj).length === 0; }
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Test of benchmark: https://jsperf.app/govaru

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