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JS realizes the effect code appearing word by word

小云云
Release： 2018-03-26 17:37:12
Original
2478 people have browsed it

This article mainly shares with you the JS code to achieve the word-by-word appearance effect. Recently, I saw a simple and practical word-by-word animation effect. I simply wrote one myself. It is a small trick and is worth saving.

First the renderings:


Source code: 

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
</head>
<body>
<p id="showStr"></p>
<p style="display:none" id="string">
逐字出来的效果，哈哈哈哈哈哈哈哈哈
</p>  
<script type="text/javascript">
  var index = 0;  
  var str = document.getElementById("string").innerHTML;  
  setInterval(function() {  
   if(index == str.length) { 
//清除定时器
clearInterval();
//若要让效果无限循环，把index归0即可
// index = 0;
}  
var a = document.getElementById("showStr")
a.innerText = str.substring(0, index++);
},400)
</script>
</body>
</html>
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