Run results for: Web Component append content 4 ways

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128.0.0.0 Safari/537.36

Browser: Chrome 128

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Benchmark engine: Benchmark.js

x-appendraw

352K/s

x-appenchilddraw

318K/s

x-prepend

316K/s

x-append

300K/s

x-innerHTML

296K/s

View exact numbers

Test name	Executions per second
✓ x-appendraw	352,294 Ops/sec
x-appenchilddraw	317,727 Ops/sec
x-prepend	316,407 Ops/sec
x-append	300,130 Ops/sec
x-innerHTML	296,122 Ops/sec

Script Preparation code:

      customElements.define('x-innerhtml', class extends HTMLElement {
          connectedCallback() {
              this.innerHTML = '<span>.</span> ';
          }
      });
      customElements.define('x-appendraw', class extends HTMLElement {
          connectedCallback() {
              const span = document.createElement('span');
              span.textContent = '. ';
              this.append(span);
          }
      });
      customElements.define('x-appendchildraw', class extends HTMLElement {
          connectedCallback() {
              const span = document.createElement('span');
              span.textContent = '. ';
              this.appendChild(span);
          }
      });

      const createElement = (tag, props = {}) => Object.assign(document.createElement(tag), props);

      customElements.define('x-prepend', class extends HTMLElement {
          connectedCallback() {
              this.prepend(createElement("span", {
                  textContent: ". "
              }));
          }
      });
      customElements.define('x-append', class extends HTMLElement {
          connectedCallback() {
              this.append(createElement("span", {
                  textContent: ". "
              }));
          }
      });

Tests: