<!DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>密码强度检测</title> <script type="text/javascript" src="https://www.jb51.net/js/jquery-2.2.4.min.js"></script> <style type="text/css"> body { font: 12px/1.5 Arial; } input { float: left; font-size: 12px; width: 150px; font-family: arial; padding: 3px; border: 1px solid black; } input.error { border: 1px solid red; } #tips { float: left; margin: 2px 0 0 20px; } #tips span { float: left; width: 50px; height: 20px; color: white; background: green; margin-right: 2px; line-height: 20px; text-align: center; } </style> <script type="text/javascript"> $(function() { var aStr = ["弱", "中", "强", "牛逼"]; function checkStrong(val) { var modes = 0; if (val.length < 6) return 0; if (/\d/.test(val)) modes++; //数字 if (/[a-z]/.test(val)) modes++; //小写 if (/[A-Z]/.test(val)) modes++; //大写 if (/\W/.test(val)) modes++; //特殊字符 if (val.length > 12) return 4; return modes; }; $(":text").keyup(function() { var val = $(this).val(); $("p").text(val.length); var num = checkStrong(val); switch (num) { case 0: break; case 1: $("#tips span").css('background', 'yellow').text('').eq(num - 1).css('background', 'red').text(aStr[num - 1]); break; case 2: $("#tips span").css('background', 'green').text('').eq(num - 1).css('background', 'red').text(aStr[num - 1]); break; case 3: $("#tips span").css('background', 'green').text('').eq(num - 1).css('background', 'red').text(aStr[num - 1]); break; case 4: $("#tips span").css('background', 'green').text('').eq(num - 1).css('background', 'red').text(aStr[num - 1]); break; default: break; } }) }) </script> </head> <body> <input type="text" value="" maxlength="16" /> <div><span></span><span></span><span></span><span></span></div> <p></p> </body> </html>
js判断密码强度的方法
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