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<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <title>Document</title> <style> .box{ list-style-type: none; } input{ margin-bottom: 10px; border-radius: 5px; width: 300px; height: 25px; } [type=submit]{ background: #0E97E4; color: white; height: 50px; } </style> </head> <body> <div class="box"> <li><input type="text" id="one" placeholder="请输入字母或数字组成的登录代码"></li> <li><input type="text" id="two" placeholder="请输入大小写字母、数字和特殊符号组成的密码"></li> <li><input type="submit" value="确认登录" id="danji"></li> </div> <div id="result"></div> <script src="jquery-3.2.1.js"></script> <script> $(document).ready(function(){ $("#one").mouseover(function(){ $(this).css("border-color","blue"); $(this).attr("placeholder",""); }); $("#one").mouseout(function(){ $(this).css("border-color","pink"); $(this).attr("placeholder","请输入字母或数字组成的登录代码"); }); $("#two").mouseover(function(){ $(this).css("border-color","blue"); $(this).attr("placeholder",""); }); $("#two").mouseout(function(){ $(this).css("border-color","pink"); $(this).attr("placeholder","请输入大小写字母、数字和特殊符号组成的密码"); }); //验证 $("#danji").click(function(){ var code=/^[A-Za-z0-9]+$/; var passwd=/^\w+$/; var a=$("#one").val(); var b=$("#two").val(); if(code.test(a)&&passwd.test(b)){ alert("你输入登陆代码为:"+a+"\n你输入登陆密码为:"+b); } else{ alert("输入登陆代码及密码"); } }); }); </script> </body> </html>
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