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<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
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<body>
<div id="pic" style="display: none;">
这是一段打字机效果的文字
</div>
<script src="https://code.jquery.com/jquery-3.1.1.min.js"></script>
<script>
(function ($) {
$.fn.typewriter = function () {
this.each(function () {
var $ele = $(this),
str = $ele.html(),
progress = 0;
$ele.html(‘‘);
var timer = setInterval(function () {
var current = str.substr(progress, 1);
if (current == ‘<‘) {
progress = str.indexOf(‘>‘, progress) + 1;
} else {
progress++;
}
$ele.html(str.substring(0, progress) + (progress & 1 ? ‘_‘ : ‘‘));
if (progress >= str.length) {
clearInterval(timer);
}
}, 150);
});
return this;
};
})(jQuery);
$("#pic").show().typewriter(50);
</script>
</body>
</html>
原文：https://www.cnblogs.com/zk12138/p/13204404.html