Dashboard Temp Share Shortlinks Frames API

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index.html
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<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <title>Hacker Like Text Scramble Effect</title>
    <meta name="viewport" content="width=device-width, initial-scale=1" />
    <link rel="stylesheet" type="text/css" media="screen" href="style.css" />
  </head>

  <body>
    <div class="container">
      <div class="text"></div>
    </div>

    <script>
      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 = [
        "Programming",
        "is the art",
        "of telling another human being",
        "what one wants",
        "the computer to do.",
      ];

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

      let counter = 0;
      const next = () => {
        fx.setText(phrases[counter]).then(() => {
          setTimeout(next, 800);
        });
        counter = (counter + 1) % phrases.length;
      };

      next();
    </script>
  </body>
</html>

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