47 lines
No EOL
1.1 KiB
HTML
47 lines
No EOL
1.1 KiB
HTML
<!DOCTYPE HTML>
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<html>
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<head>
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<meta charset="utf-8">
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<link rel="stylesheet" href="style.css">
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<script src="https://js.cx/libs/animate.js"></script>
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</head>
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<body>
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<textarea id="textExample" rows="4" cols="60">Он стал под дерево и ждет. И вдруг граахнул гром — Летит ужасный Бармаглот И пылкает огнем!
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</textarea>
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<button onclick="animateText(textExample)">Запустить анимированную печать!</button>
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<script>
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function animateText(textArea) {
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var text = textArea.value;
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var to = text.length,
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from = 0;
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animate({
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duration: 5000,
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timing: bounce,
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draw: function(progress) {
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var result = (to - from) * progress + from;
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textArea.value = text.substr(0, Math.ceil(result))
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}
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});
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}
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function bounce(timeFraction) {
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for (var a = 0, b = 1, result; 1; a += b, b /= 2) {
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if (timeFraction >= (7 - 4 * a) / 11) {
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return -Math.pow((11 - 6 * a - 11 * timeFraction) / 4, 2) + Math.pow(b, 2)
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}
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}
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}
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</script>
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</body>
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</html> |