Benchmark: Object size vs _.size

HTML Preparation code:

<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.core.js"></script>

Script Preparation code:


Object.size = function(obj) {
    var size = 0, key;
    for (key in obj) {
        if (obj.hasOwnProperty(key)) size++;
    }
    return size;
};

Tests:

Object size
var a = {a:1,b:2,c:3,d:4}; var size = Object.size(a);
_.size
var a = {a:1,b:2,c:3,d:4}; var size = _.size(a);
Object keys size
var a = {a:1,b:2,c:3,d:4}; var size = Object.keys(a).length;

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Object size
_.size
Object keys size

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36 Edg/91.0.864.64

Browser/OS: Chrome 91 on Windows

View result in a separate tab

Test name	Executions per second
Object size	6257550.0 Ops/sec
_.size	6115120.0 Ops/sec
Object keys size	6097297.0 Ops/sec

Object size vs _.size (version: 1)

Compare the new ES6 spread operator with the traditional concat() method

Comparing performance of: Object size vs _.size vs Object keys size

Created: 6 years ago by: Registered User

Jump to the latest result

Object size

_.size

Object keys size

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A