JS中产生20位随机数以0-9为例也可以是a-z A-Z_技术学院_宜昌市隼壹珍商贸有限公司

您好,欢迎访问宜昌市隼壹珍商贸有限公司

400 890 5375
当前位置: 主页 > 新闻动态 > 技术学院

JS中产生20位随机数以0-9为例也可以是a-z A-Z

发布时间:2026-01-18  |  点击率:

JS代码:

function s20(){ 
var data=["0","1","2","3","4","5","6","7","8","9","a","b","c","d","e","f"]; 
for(var j=0;j<500;j++){ //500为想要产生的行数
var result="";
for(var i=0;i<20;i++){ //产生20位就使i<20
r=Math.floor(Math.random()*16); //16为数组里面数据的数量,目的是以此当下标取数组data里的值! 
result+=data[r]; //输出20次随机数的同时,让rrr加20次,就是20位的随机字符串了。 
} 
document.write(result); 
document.write("<br/>"); 
} }

完整html代码:

<html> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> 
<title></title> 
<script type="text/javascript"> 
function s20(){ 
var data=["0","1","2","3","4","5","6","7","8","9","a","b","c","d","e","f"]; 
for(var j=0;j<500;j++){ 
var result=""; 
for(var i=0;i<20;i++){ 
r=Math.floor(Math.random()*16);

result+=data[r]; 
} 
document.write(result); 
document.write("<br/>"); 
} } 
</script> 
</head> 
<body> 
<input type="button" onclick="s20()" value="产生随机数"> 
</body> 
</html>

全国统一服务电话

400 890 5375

电子邮箱:879577@qq.com

公司地址:宜昌市西陵区黄河路5号三峡明珠10栋1051室

咨询微信

TEL:13680874598