<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>js实现数字动态递增效果</title>
</head>
<body>
<span id="span1">0</span>
<script>
//调用方法
NumDynamic("span1",30,100);
/**
* 动态数字方法
* ID => 对应ID
* speed => 递增速度
* value => 接入的数字
*/
function NumDynamic(ID,speed,value){
var span1 = document.getElementById(ID);
if(value>0){
var num = 0;
var t = setInterval(function(){
num++;
span1.innerText = num;
if(num==value){
clearInterval(t);
}
},speed);
}else{
span1.innerText = value;
}
}
</script>
</body>
</html>
