Run results for: Object.assign vs spread vs jQuery.extend

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_4) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.1.1 Safari/605.1.15

Browser: Safari 13

Operating system: Mac OS X 10.15.4

Device Platform: Desktop

Date tested: 4 years ago

HTML Preparation code:

<script src="https://code.jquery.com/jquery-3.1.1.min.js"></script>

Tests:

Object.assign
var params = { b:"hello", c: true, d:7 }; var other = Object.assign({ a: 2 }, params);
spread operator
var params = { b:"hello", c: true, d:7 }; var other = { a: 2, ...params };
jQuery.extend
var params = { b:"hello", c: true, d:7 }; var other = $.extend({ a: 2 }, params);