Text Scramble

index.html

<div class="text-change-container">
  <div class="text-change"></div>
</div>
<div class="text-change-container">
  <div class="text-change"></div>
</div>

script.babel

class TextScramble {
  constructor(el) {
    this.el = el;
    this.chars = "☠!<>-_\\/[]{}—=+*^?#________";
    this.update = this.update.bind(this);
  }
  setText(newText) {
    const oldText = this.el.innerText;
    const length = Math.max(oldText.length, newText.length);
    const promise = new Promise((resolve) => (this.resolve = resolve));
    this.queue = [];
    for (let i = 0; i < length; i++) {
      const from = oldText[i] || "";
      const to = newText[i] || "";
      const start = Math.floor(Math.random() * 40);
      const end = start + Math.floor(Math.random() * 40);
      this.queue.push({ from, to, start, end });
    }
    cancelAnimationFrame(this.frameRequest);
    this.frame = 0;
    this.update();
    return promise;
  }
  update() {
    let output = "";
    let complete = 0;
    for (let i = 0, n = this.queue.length; i < n; i++) {
      let { from, to, start, end, char } = this.queue[i];
      if (this.frame >= end) {
        complete++;
        output += to;
      } else if (this.frame >= start) {
        if (!char || Math.random() < 0.28) {
          char = this.randomChar();
          this.queue[i].char = char;
        }
        output += `<span class="dud">${char}</span>`;
      } else {
        output += from;
      }
    }
    this.el.innerHTML = output;
    if (complete === this.queue.length) {
      this.resolve();
    } else {
      this.frameRequest = requestAnimationFrame(this.update);
      this.frame++;
    }
  }
  randomChar() {
    return this.chars[Math.floor(Math.random() * this.chars.length)];
  }
}

const phrases = [
  "Shane White",
  "cqrCyber / cc",
  "tools related to Cyber",
  "Security",
  "&",
  "Computer / Science",
  "&",
  "Ethical Hacking  { * }",
  "an initiative to help secure the Cyber",
  "https://godiam.sharepoint.com",
  "entwicklerprogramm@pm.me",
  "",
  "",
  ""
];

const el = document.querySelector(".text-change");
const fx = new TextScramble(el);

let counter = 0;
const next = () => {
  fx.setText(phrases[counter]).then(() => {
    setTimeout(next, 2000);
  });
  counter = (counter + 1) % phrases.length;
};

next();

style.stylus

@import 'https://fonts.googleapis.com/css2?family=Goldman&display=swap'

html, body
  background: #0D0D0D
  height: 100%

.text-change-container
  height: 100%
  width: 100%
  justify-content: center
  align-items: center
  display: flex

.text-change
  font-family: 'Goldman', monospace
  font-weight: normal
  font-size: larger
  color: rgba(200, 200, 200, 1)
  filter: drop-shadow(0 0 0.3em rgba(200, 200, 200, 0.3))

.dud
  color: rgba(242, 5, 5, 0.8)
  filter: drop-shadow(0 0 0.5em red)
  /* Color Theme Swatches in Hex */

.Abstract-1-hex
  color: #F2F2F2

.Abstract-2-hex
  color: #BDB8D9

.Abstract-3-hex
  color: #010D00

.Abstract-4-hex
  color: #D7D9C7

.Abstract-5-hex
  color: #0D0D0D

/* Color Theme Swatches in RGBA */
.Abstract-1-rgba
  color: rgba(242, 242, 242, 1)

.Abstract-2-rgba
  color: rgba(189, 184, 217, 1)

.Abstract-3-rgba
  color: rgba(1, 13, 0, 1)

.Abstract-4-rgba
  color: rgba(215, 217, 199, 1)

.Abstract-5-rgba
  color: rgba(13, 13, 13, 1)

/* Color Theme Swatches in HSLA */
.Abstract-1-hsla
  color: hsla(0, 0, 94, 1)

.Abstract-2-hsla
  color: hsla(249, 30, 78, 1)

.Abstract-3-hsla
  color: hsla(115, 100, 2, 1)

.Abstract-4-hsla
  color: hsla(66, 19, 81, 1)

.Abstract-5-hsla
  color: hsla(0, 0, 5, 1)

text-scramble.markdown

Text Scramble

Text scramble animation/effect

A Pen by Shane White on CodePen.

License.