Run results for: Element creation speed

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.87 Safari/537.36

Browser: Chrome 67

Operating system: Mac OS X 10.13.3

Device Platform: Desktop

Date tested: 6 years ago

Test name	Executions per second
Procedural Element creation	191119.6 Ops/sec
jQuery Element creation	32699.6 Ops/sec
Custom Method	114035.9 Ops/sec

HTML Preparation code:

<script type="text/javascript" src="https://code.jquery.com/jquery-3.2.1.min.js"></script>
<div id="testElement"></div>

Script Preparation code:

	(function StringPrototypeExtensions() {
		assignProps(String.prototype, {
			ReplaceAll: function ReplaceAll(sequence, value) {
				return this.split(sequence).join(value);
			},
			TrimStart: function TrimStart(ch) {
				var str = this;
				if (ch == null || !ch.length) { ch = ' '; }
				var len = ch.length;
				while (str.startsWith(ch)) { str = str.substr(len); }
				return str;
			},
			TrimEnd: function TrimEnd(ch) {
				var str = this;
				if (ch == null || !ch.length) { ch = ' '; }
				var len = ch.length;
				while (str.endsWith(ch)) { str = str.substr(0, str.length - len); }
				return str;
			},
			SubstrBefore: function substrBefore(sequence, bIncludeSequence) {
				var idx = this.indexOf(sequence);
				if (idx >= 0) {
					if (bIncludeSequence) { idx += sequence.length; }
					if (idx <= this.length) { return this.substr(0, idx); }
				}
				return this;
			},
			SubstrAfter: function substrAfter(sequence, bIncludeSequence) {
				var idx = this.indexOf(sequence);
				if (idx >= 0) {
					if (!bIncludeSequence) { idx += sequence.length; }
					if (idx <= this.length) { return this.substr(idx); }
				}
				return this;
			},
			SubstrBeforeLast: function SubstrBeforeLast(sequence, bIncludeSequence) {
				var idx = this.lastIndexOf(sequence);
				if (idx >= 0) {
					if (bIncludeSequence) { idx += sequence.length; }
					if (idx <= this.length) { return this.substr(0, idx); }
				}
				return this;
			},
			SubstrAfterLast: function SubstrAfterLast(sequence, bIncludeSequence) {
				var idx = this.lastIndexOf(sequence);
				if (idx >= 0) {
					if (!bIncludeSequence) { idx += sequence.length; }
					if (idx <= this.length) { return this.substr(idx); }
				}
				return this;
			},
		});
	}());


	(function RegexPrototypeExtensions() {
		assignProps(RegExp.prototype, {
			GetMatches: function GetMatches(str) {
				this.lastIndex = 0;
				var matches = [], match = null;
				while (match = this.exec(str)) {
					matches.push(match);
				}
				return matches;
			},
		});
	}());


	(function DocumentExtensions() {
		assignProps(document, {
			CreateElementFromHTML: (function () {
				const rgxTag = /^\<(\w+)(?:\s+|\>)/;
				const rgxAttribs = /(\S+)=(["'])(.*?)(?:\2)/g;
				return function CreateElementFromHTML(html) {
					html = html.trim();
					var innerhtml = html.SubstrAfter('>').SubstrBeforeLast('<');
					var strelem = html.SubstrBefore('>', true);
					var tag = rgxTag.exec(strelem)[1];
					var attribs = rgxAttribs.GetMatches(strelem);
					var elem = document.createElement(tag);
					for (var i = 0, len = attribs.length; i < len; i++) {
						var match = attribs[i];
						elem.setAttribute(match[1], match[3]);
					}
					elem.innerHTML = innerhtml;
					return elem;
				};
			 }()),
		});
	}());


	function assignProps(proto, obj) {
		var descriptors = Object.getOwnPropertyDescriptors(obj);
		for (var desc in descriptors) {
			var prop = descriptors[desc];
			prop.enumerable = false;
			Object.defineProperty(proto, desc, prop);
		}
	}

Tests:

Procedural Element creation
var el = document.createElement('link'); el.id='ZInject_CSS_zinject_regexr'; el.type='text/css'; el.rel='stylesheet'; el.dataset.srcprop='href'; el.dataset.src='standalone/reddit/zinject.reddit.css'; el.async = true; el.defer = true; return el;
jQuery Element creation
return $(`<link id="zinject_reddit_css" type="text/css" rel="stylesheet" async="" defer="" data-srcprop="href" data-src="standalone/reddit/zinject.reddit.css">`);
Custom Method
return document.CreateElementFromHTML(`<link id="zinject_reddit_css" type="text/css" rel="stylesheet" async="" defer="" data-srcprop="href" data-src="standalone/reddit/zinject.reddit.css">`);

Run results for: Element creation speed

Comparing speed of creating elements

Procedural Element creation

jQuery Element creation

Custom Method