98 lines
2.3 KiB
HTML
98 lines
2.3 KiB
HTML
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>The Sudo</title>
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<style>
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html,
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body{
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height: 100%;
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margin: 0;
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overflow: hidden;
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}
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body {
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display: flex;
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align-items: center;
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justify-content: center;
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background-color: black;
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}
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p {
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line-height: 1;
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width: 30px;
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}
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span {
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display: block;
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color: #b3ffc7;
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font-size: 24px;
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text-align: center;
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width: 30px;
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height: 30px;
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opacity: 0;
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font-family: Helvetica, sans-serif;
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}
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</style>
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</head>
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<body>
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<script>
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const columnCount = Math.floor(window.innerWidth / 30);
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const rowCount = Math.floor(window.innerHeight / 30);
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for(let i=0; i<columnCount; i++) {
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const p = document.createElement('p');
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setupColumn(p);
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document.body.append(p);
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}
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function setupColumn(p) {
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const delay = random(100, 300);
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const duration = random(100, 2000);
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const hasChildren = p.children.length > 0;
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for(let j=0; j<rowCount; j++){
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const span = hasChildren ? p.children.item(j) : document.createElement('span');
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span.innerText = getRandomChar();
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const animation = span.animate([
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{ opacity: '1' },
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{ opacity: '0.05' }
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], {
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duration: duration,
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delay: delay + (j * 75), // add delay for every char
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fill: 'forwards' // keep element with the last state of anim
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});
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// re build column after last char disappear
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if(j === rowCount-1) {
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animation.onfinish = () => {
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setupColumn(p);
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};
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}
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if(!hasChildren) {
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p.appendChild(span);
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}
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}
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}
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function random(from, to) {
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return Math.trunc(Math.random() * (to - from + 1) + from);
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}
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function getRandomChar() {
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// some ranges for chars of latin and other alphabets
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const charRanges = [
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[0x3041, 0x30ff],
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[0x0021, 0x007a],
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[0x00bc, 0x02af]
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];
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const i = random(0, charRanges.length - 1);
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return String.fromCharCode(random(charRanges[i][0], charRanges[i][1]));
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}
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</script>
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</body>
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</html>
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