Run results for: Compare lodash isEmpty and length comparison on arrays and Object keys

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.102 Safari/537.36

Browser: Chrome 104

Operating system: Linux

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
isEmpty empty array	4828587.5 Ops/sec
length empty array	10844446.0 Ops/sec
isEmpty array of strings	4970387.5 Ops/sec
length array of strings	11270569.0 Ops/sec
isEmpty on object	5206565.5 Ops/sec
length of object	5999092.5 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: 3, d: 4, e: 5};

Tests:

isEmpty empty array
_.isEmpty(window.foo1);
length empty array
window.foo1.length === 0;
isEmpty array of strings
_.isEmpty(window.foo2);
length array of strings
window.foo2.length === 0;
isEmpty on object
_.isEmpty(window.foo3);
length of object
Object.keys(window.foo3).length === 0;

Run results for: Compare lodash isEmpty and length comparison on arrays and Object keys

isEmpty empty array

length empty array

isEmpty array of strings

length array of strings

isEmpty on object

length of object