js打字机:
<div id="box"></div>
<script>
let str = "附件哈时代峰峻阿萨德";
var oBox = document.querySelector('#box');
var index = 0;
var len = str.length;
var timer = setInterval(show, 1000);
function show() {
if (index == len) {
clearInterval(timer);
}
oBox.innerHTML = str.substr(0, index);
index++
}
</script>