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A simple benchmark to compare full re-render of a large table vs. updating individual text contents vs. updating them selectively.
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| <!doctype html> | |
| <!-- Set type to one of "full", "all" or "selective" --> | |
| <fun-matrix type="selective"> | |
| </fun-matrix> | |
| <script type="module"> | |
| import {html} from "https://darkwiiplayer.github.io/js/skooma.js" | |
| import element from "https://darkwiiplayer.github.io/js/element.js" | |
| element(class FunMatrix extends HTMLElement { | |
| constructor() { | |
| super() | |
| this.items = Array(100).fill(100).map(width => Array(width).fill(0)) | |
| this.addEventListener("click", event => this.update()) | |
| this.render() | |
| } | |
| render() { | |
| this.replaceChildren( | |
| html.table( | |
| this.items.map(row => html.tr( | |
| row.map(item => html.td(item)) | |
| )) | |
| ) | |
| ) | |
| } | |
| connectedCallback() { | |
| window.setInterval(() => { | |
| this.mutate() | |
| this.update(this.getAttribute("type")) | |
| }, 1e2) | |
| } | |
| mutate() { | |
| const row = this.items[Math.floor(Math.random() * this.items.length)] | |
| row[Math.floor(Math.random() * row.length)] = Math.floor(Math.random() * 10) | |
| } | |
| update(type="full") { this[`update_${type}`]() } | |
| update_full() { this.render() } | |
| update_all() { | |
| this.querySelectorAll("tr").forEach((row, y) => { | |
| row.querySelectorAll("td").forEach((items, x) => { | |
| items.innerText = this.items[y][x] | |
| }) | |
| }) | |
| } | |
| update_selective() { | |
| this.querySelectorAll("tr").forEach((row, y) => { | |
| row.querySelectorAll("td").forEach((cell, x) => { | |
| const value = this.items[y][x] | |
| if (cell.innerText != String(value)) | |
| cell.innerText = value | |
| }) | |
| }) | |
| } | |
| }) | |
| </script> |
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