Run results for: WebComponent rendering

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:109.0) Gecko/20100101 Firefox/119.0

Browser: Firefox 119

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: 6 months ago

Test name	Executions per second
HTML string	12.0 Ops/sec
Clone node	12.3 Ops/sec

HTML Preparation code:

<template id="component">
    <div id="header">
        <h3 id="title">{{ title }}</h3>
        <h4 id="sub-title">Written by life</h4>
    </div>

    <div id="body">
        <slot></slot>
      	<button id="button">click me</button>
    </div>
</template>

<template id="content">
    <p>
        Lorem ipsum dolor sit amet, consectetur adipisicing elit.
        Amet aperiam corporis culpa deserunt dicta distinctio iste
        laboriosam laudantium modi, molestiae molestias necessitatibus
        neque nihil nisi omnis praesentium quam saepe totam ut velit.
        Adipisci architecto atque dignissimos doloremque dolores ex
        impedit in inventore nemo nulla repudiandae sequi veritatis
        voluptas voluptate, voluptatibus?
    </p>
</template>

<div id="wrapper" hidden></div>

Script Preparation code:

const fillTitle = shadow => {
    shadow.getElementById('title').textContent = 'Lorem ipsum dolor sit amet';
};

const attachEvents = shadow => {
    const button = shadow.getElementById('button');
    button.addEventListener('mousedown', () => {});
    button.addEventListener('mouseup', () => {});
    button.addEventListener('click', () => {});
    button.addEventListener('dragstart', () => {});
    button.addEventListener('dragend', () => {});
    button.addEventListener('dragcancel', () => {});
    button.addEventListener('dragmove', () => {});
    button.addEventListener('custom', () => {});
};

const renderWithHTML = shadow => {
    shadow.innerHTML = document.getElementById('component').innerHTML;
};
const renderWithClone = shadow => {
    shadow.appendChild(document.getElementById('component').content.cloneNode(true));
};

const wrapper = document.getElementById('wrapper');
const content = document.getElementById('content').innerHTML;

const examplesHTML = `<my-component-a>${ content }</my-component-a>`.repeat(5000);
const examplesClone = `<my-component-b>${ content }</my-component-b>`.repeat(5000);

class MyComponent extends HTMLElement {
    render() {};

    constructor() {
        super();
        const shadow = this.attachShadow({
            mode: 'open'
        });
        this.render(shadow);

        fillTitle(shadow);
        attachEvents(shadow);
    }
}

class MyComponentA extends MyComponent {
    render(shadow) {
      return renderWithHTML(shadow);
    };
}
class MyComponentB extends MyComponent {
    render(shadow) {
      return renderWithClone(shadow);
    };
}

window.customElements.get('my-component-a') || customElements.define('my-component-a', MyComponentA);
window.customElements.get('my-component-b') || customElements.define('my-component-b', MyComponentB);

window.renderTestHTMLString = () => wrapper.innerHTML = examplesHTML;
window.renderTestCloneNode = () => wrapper.innerHTML = examplesClone;

Tests:

HTML string
renderTestHTMLString();
Clone node
renderTestCloneNode();

Run results for: WebComponent rendering

HTML string

Clone node