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script.js

@@ -0,0 +1,76 @@
+    // TextScramble
+    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 = [
+        "Hey!",
+        "That's my page!",
+        "if you like", "check out", "my social media", "below :D"
+    ]
+
+    const el = document.querySelector('.text')
+    const fx = new TextScramble(el)
+
+    let counter = 0
+    const next = () => {
+        fx.setText(phrases[counter]).then(() => {
+            setTimeout(next, 600)
+        })
+        counter = (counter + 1) % phrases.length
+    }
+
+    next()