<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<style>
#app{
color: #fff;
background-color: black;
text-align: center;
}
.line{
opacity:1;
animation: typeobj 0.7s infinite;
}
@keyframes typeobj {
from {
opacity: 1;
}
to {
opacity: 0;
}
}
</style>
<body>
<div id="app">
<span class="text"></span>
<span style="color:#fff;font-size:20px;margin-left:-6px;" class="line">|</span>
</div>
</body>
<script>
let app = document.querySelector('.text')
let text = '觉得对你有帮助，就点个攒吧！'
arr = text.split('')
write(100,0)
let index=0
function write(timer,index){
setTimeout(()=>{
app.innerHTML += arr[index]
index++
if(index<arr.length){
write(timer,index)
}
},timer)
}
</script>
</html>
