废话不多说，上代码~~
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<div id="text"></div>
</body>
<script>
let divTyping = document.getElementById('text')
let i = 0,
timer = 0,
str = '用JS实现动态打字效果'
function typing () {
if (i <= str.length) {
divTyping.innerHTML = str.slice(0, i++) + '_'
timer = setTimeout(typing, 200)
}
else {
divTyping.innerHTML = str//结束打字,移除 _ 光标
clearTimeout(timer)
}
}
typing()
</script>
</html>