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Boof 2023-03-15 12:32:56 +01:00 committed by GitHub
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<script>//
// TextScramble
// ——————————————————————————————————————————————————
class TextScramble {
constructor(el) {
this.el = el
this.chars = '!<>-_\\/[]{}—=+*^?#________'
this.update = this.update.bind(this)
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
});
}
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;
}
cancelAnimationFrame(this.frameRequest)
this.frame = 0
this.update()
return promise
output += `<span class="dud">${char}</span>`;
} else {
output += from;
}
}
update() {
let output = ''
let complete = 0
for (let i = 0, n = this.queue.length; i < n; i++) {
let { from, to, start, end, char } = this.queue[i]
if (this.frame >= end) {
complete++
output += to
} else if (this.frame >= start) {
if (!char || Math.random() < 0.28) {
char = this.randomChar()
this.queue[i].char = char
}
output += `<span class="dud">${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)]
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)];
}
}
// ——————————————————————————————————————————————————
// Example
// ——————————————————————————————————————————————————
const phrases = [
'You think you are funny?',
'Do you think that the number 69 is funny?',
'You probably just see the number 69 and go "haha 69"',
'Its not funny',
'Please stop'
]
const el = document.querySelector('.text')
const fx = new TextScramble(el)
let counter = 0
const phrases = ['You think you are funny?', 'Do you think that the number 69 is funny?', 'You probably just see the number 69 and go "haha 69"', 'Its not funny', 'Please stop'];
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()
fx.setText(phrases[counter]).then(() => {
setTimeout(next, 800);
});
counter = (counter + 1) % phrases.length;
};
next();
</script>
<style>
@import 'https://fonts.googleapis.com/css?family=Roboto+Mono:100';