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Matrix Effect
canvas(id='canv', width=500, height=200)
const canvas = document.getElementById('canv');
const ctx = canvas.getContext('2d');
const w = canvas.width = document.body.offsetWidth;
const h = canvas.height = document.body.offsetHeight;
const cols = Math.floor(w / 20) + 1;
const ypos = Array(cols).fill(0);
ctx.fillStyle = '#000';
ctx.fillRect(0, 0, w, h);
function matrix () {
ctx.fillStyle = '#0001';
ctx.fillRect(0, 0, w, h);
ctx.fillStyle = '#0f0';
ctx.font = '15pt monospace';
ypos.forEach((y, ind) => {
const text = String.fromCharCode(Math.random() * 128);
const x = ind * 20;
ctx.fillText(text, x, y);
if (y > 100 + Math.random() * 10000) ypos[ind] = 0;
else ypos[ind] = y + 20;
});
}
setInterval(matrix, 50);
body {
margin: 0;
height: 100vh;
width: 100vw;
}
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