摘要:
//生成4位i随机数 var str = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890"; var arr = str.split(""); var result = ""; for(var i=0;i<4;i++) 阅读全文
摘要:
<!DOCTYPE html><html> <head> <meta charset="utf-8"> <title></title> <link rel="stylesheet" type="text/css" href="css/index.css" /> <style type="text/c 阅读全文