Run results for: Compare lodash isEmpty and length comparison on arrays, stings and custom function isEmpty

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/109.0.0.0 Safari/537.36

Browser: Chrome 109

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
isEmpty empty array	4978956.0 Ops/sec
length empty array	10692980.0 Ops/sec
custom isEmpty empty array	3647810.5 Ops/sec
isEmpty array of strings	5006453.5 Ops/sec
length array of strings	10865642.0 Ops/sec
custom isEmpty array of strings	2872656.5 Ops/sec
isEmpty array of objects	4946656.5 Ops/sec
length empty array of objects	10539726.0 Ops/sec
custom isEmpty array of objects	3086619.5 Ops/sec
isEmpty empty string	6126710.5 Ops/sec
length empty string	10473003.0 Ops/sec
custom isEmpty empty string	4857593.5 Ops/sec
isEmpty filled string	5988131.5 Ops/sec
length filled string	10735190.0 Ops/sec
custom isEmpty filled string	4464094.5 Ops/sec

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);

Run results for: Compare lodash isEmpty and length comparison on arrays, stings and custom function isEmpty

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