css+js实现文字打字机效果
效果图：
html代码：
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<link rel="stylesheet" type="text/css" href="./index.css"/>
</head>
<body>
<h1></h1>
<div>
<p>><span>[root@VM-0-9-centos~]#</span>:"<i>rm -rf/关于小伍的记忆</i>"</p>
<p>> <span>[root@VM-0-9cnetos~]#</span>:"<i>删除成功</i>"</p>
<p>> <span>[root@VM-0-9cnetos~]#</span>:<b>文件备份自动其中中...
:<a href="">备份失败</a>,<a href="">仅</a><a href="">文件备份</a><a href="">碎片</a></b></p>
<p>> <span>[root@VM-0-9cnetos~]#</span>:"<i>文件碎片正在加载...</i>"</p>
<p>> <span>[root@VM-0-9cnetos~]#</span>:"<i>加载成功 正在打开...</i>"</p>
</div>
</body>
<script src="./index.js" type="text/javascript" charset="utf-8"></script>
</html>
css代码:
*{
margin: 0;
padding: 0;
border: 0;
font-size:100%;
font:inherit;
vartical-align:baseline;
box-sizing: border-box;
color: inherit;
}
body{
background-color: linear-gradient(120deg,#4f0088 100%,#000000 100%);
height: 100vh;
}
h1{
font-size: 45vm;
text-align: center;
position: fixed;
width: 100vw;
z-index: 1;
color: #ffffff26;
text-shadow: 0 0 50px rgba(0,0,0,0.07);
top: 50%;
-webkit-transform: translateY(-50%);
transform: translateY(-50%);
font-family: "Montserrat",monospace;
}
div{
background-color: rgba(0,0,0,0);
width: 70vw;
position: relative;
top: 50%;
-webkit-transform: translateY(-50%);
transform: translateY(-50%);
margin: 0 auto;
padding: 30px 30px 10px;
box-shadow: 0 0 150px -20px rgba(0,0,0,.5);
z-index: 3;
}
p{
font-family: "Share Tech Mono",monospace;
color: #f5f5f5;
margin: 0 0 20px;
font-size: 17px;
line-height: 1.2;
}
span{
color: #f0c674;
}
i{
color: #8abeb7;
}
div a{
text-decoration: none;
}
b{
color: #81a2be;
}
a.avatar{
position: fixed;
bottom: 15px;
right: -100px;
-webkit-animation: slide 0.5s 4.5s forwards;
animation: slide 0.5s 4.5s forwards;
display: block;
z-index: 4;
}
a.avatar img{
border-radius: 100%;
width: 44px;
border: 2px solid white;
}
@-webkit-keyframes slide{
from{
right: -100%;
-webkit-transform: rotate(360deg);
transform: rotate(360deg);
opacity: 0;
}
to{
right: 15px;
-webkit-transform: rotate(0deg);
transform: rotate(0deg);
opacity: 1;
}
}
@keyframes slide{
from{
right: -100%;
-webkit-transform: rotate(360deg);
transform: rotate(360deg);
opacity: 0;
}
to{
right: 15px;
-webkit-transform: rotate(0deg);
transform: rotate(0deg);
opacity: 1;
}
}
js代码：
var str = document.getElementsByTagName('div')[0].innerHTML.toString();
var i = 0;
document.getElementsByTagName('div')[0].innerHTML = "";
setTimeout(function() {
var se = setInterval(function() {
i++;
document.getElementsByTagName('div')[0].innerHTML = str.slice(0, i) + "|";
if (i == str.length) {
clearInterval(se);
document.getElementsByTagName('div')[0].innerHTML = str;
}
}, 30)
}, 0);
总结:
实现文字打字机的效果主要原理是利用获取需要输出的元素节点（标签节点，内容节点），在一定的时间间隔里不断的增加到需要输出的元素节点里。