<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<style>
body {
background-color: skyblue;
}
#box {
/* width: 600px; */
height: 200px;
line-height: 200px;
background-color: #fff;
margin: 200px auto;
text-align: center;
font-size: 40px;
}
</style>
<!-- <script src=‘http://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js‘></script> -->
</head>
<body>
<div id="box">
想明白生命的意义吗？想真正的……活着吗!
</div>
</body>
<script>
var box = document.getElementById(‘box‘);
var box2 = box.innerText.split(‘‘);
box.innerText = ‘‘;
var i = 0;
var start = setInterval(function() {
if (i < box2.length) {
box.innerText += box2[i];
i++;
} else {
clearInterval(start);
}
},
500)
// }
</script>
</html>
