Benchmark: Compare lodash isEmpty and length comparison on arrays, stings and custom function isEmpty

Compare lodash isEmpty and length comparison on arrays, stings and custom function isEmpty (version: 0)

Comparing performance of: isEmpty empty array vs length empty array vs custom isEmpty empty array vs isEmpty array of strings vs length array of strings vs custom isEmpty array of strings vs isEmpty array of objects vs length empty array of objects vs custom isEmpty array of objects vs isEmpty empty string vs length empty string vs custom isEmpty empty string vs isEmpty filled string vs length filled string vs custom isEmpty filled string

Created: 4 years ago by: Guest

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HTML Preparation code:

<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.4/lodash.min.js"></script>

Script Preparation code:

// empty array
window.foo1 = [];

// array of strings
window.foo2 = ['a', 'b', 'c', 'd', 'e'];

// array of objects
window.foo3 = [{ a: 1, b: 2, c: { a: 1, b: 2, c: { a: 1, b: 2 } } }, { a: 1, b: 2, c: { a: 1, b: 2, c: { a: 1, b: 2 } } }, { a: 1, b: 2, c: { a: 1, b: 2, c: { a: 1, b: 2 } } }];

// empty string
window.foo4 = '';

// filled string
window.foo5 = 'Comparing performance of: isEmpty empty strings vs length empty strings isEmpty filled string vs length filled string';

function isEmpty(value){
  return  value === undefined ||
          value === null ||
          (typeof value === "object" && Object.keys(value).length === 0) ||
          (typeof value === "string" && value.trim().length === 0)
}

Tests:

isEmpty empty array
_.isEmpty(window.foo1);
length empty array
window.foo1.length === 0;
custom isEmpty empty array
isEmpty(window.foo1);
isEmpty array of strings
_.isEmpty(window.foo2);
length array of strings
window.foo2.length === 0;
custom isEmpty array of strings
isEmpty(window.foo2);
isEmpty array of objects
_.isEmpty(window.foo3);
length empty array of objects
window.foo3.length === 0;
custom isEmpty array of objects
isEmpty(window.foo3);
isEmpty empty string
_.isEmpty(window.foo4);
length empty string
window.foo4.length === 0;
custom isEmpty empty string
isEmpty(window.foo4);
isEmpty filled string
_.isEmpty(window.foo5);
length filled string
window.foo5.length === 0;
custom isEmpty filled string
isEmpty(window.foo5);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
isEmpty empty array
length empty array
custom isEmpty empty array
isEmpty array of strings
length array of strings
custom isEmpty array of strings
isEmpty array of objects
length empty array of objects
custom isEmpty array of objects
isEmpty empty string
length empty string
custom isEmpty empty string
isEmpty filled string
length filled string
custom isEmpty filled string

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128.0.0.0 Safari/537.36

Browser/OS: Chrome 128 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
isEmpty empty array	5771096.5 Ops/sec
length empty array	12807301.0 Ops/sec
custom isEmpty empty array	4328196.0 Ops/sec
isEmpty array of strings	5860886.5 Ops/sec
length array of strings	12942596.0 Ops/sec
custom isEmpty array of strings	3597737.5 Ops/sec
isEmpty array of objects	5778838.0 Ops/sec
length empty array of objects	12926015.0 Ops/sec
custom isEmpty array of objects	3725741.2 Ops/sec
isEmpty empty string	7034078.5 Ops/sec
length empty string	13014347.0 Ops/sec
custom isEmpty empty string	5848943.5 Ops/sec
isEmpty filled string	7011779.0 Ops/sec
length filled string	12951113.0 Ops/sec
custom isEmpty filled string	5724815.5 Ops/sec

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):

LLMs can make mistakes. Check important info.

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