Run results for: parseFromString vs cloneNode

Run details:

User agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:54.0) Gecko/20100101 Firefox/71.0

Browser: Firefox 71

Operating system: Windows 7

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
createElement	14.8 Ops/sec
cloneNode	48.3 Ops/sec

Script Preparation code:

var markup = '<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1"><g class="joint-port"/></svg>';

Tests:

createElement
var list = [], n = 0; while(true) { n++; list.push(new DOMParser().parseFromString(markup, 'text/xml')); if(n===1000) break; }
cloneNode
var list = [], n = 0, node = new DOMParser().parseFromString(markup, 'text/xml'); while(true) { n++; list.push(node.cloneNode(true)); if(n===1000) break; }