Run results for: _.isEmpty vs arr/length

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.130 Safari/537.36

Browser: Chrome 79

Operating system: Mac OS X 10.13.6

Device Platform: Desktop

Date tested: 4 years ago

HTML Preparation code:

<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.4/lodash.min.js"></script>

Script Preparation code:

window.arr = [];

for (var i = 0, len = 100; i < len; i++) {
  window.arr.push('key' + i);
}

Tests: