Run results for: Prepand to array

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.181 Safari/537.36

Browser: Chrome 66

Operating system: Windows

Device Platform: Desktop

Date tested: 6 years ago

Test name	Executions per second
concat	51398.5 Ops/sec
unshift	1315.5 Ops/sec

HTML Preparation code:

<script src='https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js'></script>

Script Preparation code:

var oldArray = [];
for (var i = 1; i<4000; i++) {
  oldArray.push({id: i, name: "Name "+ i });
}

Tests: