实现功能:
1、输入字符要在6-16之间;小于6个字符或大于16个字符时给予提示,而且强弱不显示;为0时,也给予提示;
2、当密码在6-16个字符之间时,如果密码全是数字或全是字母,显示弱;密码是数字与字母的组合,则显示强;若为字母数字加下划线,则为强;
效果图如下:
代码如下:
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title></title> <style> .mm-body{ position: relative; height: 100px; width: 450px; background-color: wheat; } .mm-top{ height:35px; width: 450px; background-color: wheat; } .mm-sr{ height:30px; width: 100px; float: left; text-align: center; line-height: 30px; } #mm-pwd{ float: left; height:25px; background-color: ghostwhite; border-radius: 5px; width: 150px; } .mm-btm{ height: 40px; width: 140px; position: relative; margin-left: 110px; } #lv1,#lv2,#lv3{ height: 30px; width: 40px; border-top: 4px solid gainsboro; margin-left: 3px; float: left; font-size: 18px; text-align: center; line-height: 25px; } </style> </head> <body> <div class="mm-body"> <div class="mm-top"> <span class="mm-sr">请输入密码:</span> <form method="get" action="data.html" > <input type="password" id="mm-pwd" onkeyup="show()"/> </form> <span id="mm-pd"style="color: red; font-size: 12px; line-height: 30px;"></span> </div> <div class="mm-btm"> <div id="lv1">弱</div> <div id="lv2">中</div> <div id="lv3">强</div> <!--强度判断也可用表格做 <table border="0px" cellpadding="0px" cellspacing="1px" > <tr height="20px" > <td width="40px" id="lv1" style="border-top: 3px solid darkgrey;">弱</td> <td width="40px" id="lv2" style="border-top: 3px solid darkgrey;">中</td> <td width="40px" id="lv3" style="border-top: 3px solid darkgrey;">强</td> </tr> </table>--> </div> </div> </body> </html> <script language="JavaScript"> function show(){ var a=document.getElementById("mm-pwd").value; if(a.length==0){ document.getElementById("mm-pd").innerHTML="密码不能为空!"; } else if(a.length<6){ document.getElementById("mm-pd").innerHTML="密码长度小于6个字符!"; } else if(a.length>=6&&a.length<=16){ document.getElementById("mm-pd").innerHTML=""; var reg=/^[0-9]{6,16}$|^[a-zA-Z]{6,16}$/; //全是数字或全是字母 6-16个字符 var reg1=/^[A-Za-z0-9]{6,16}$/; //数字、26个英文字母 6-16个字符 var reg2=/^\w{6,16}$/; // 由数字、26个英文字母或者下划线组成的字符串 6-16个字符 if(a.match(reg)){ document.getElementById("lv1").style.borderTopColor="red"; } else if(a.match(reg1)){ document.getElementById("lv1").style.borderTopColor="red"; document.getElementById("lv2").style.borderTopColor="yellow"; } else if(a.match(reg2)){ document.getElementById("lv1").style.borderTopColor="red"; document.getElementById("lv2").style.borderTopColor="yellow"; document.getElementById("lv3").style.borderTopColor="green"; } } else if(a.length>16){ document.getElementById("mm-pd").innerHTML="密码长度大于16个字符!"; document.getElementById("lv1").style.borderTopColor="gainsboro"; document.getElementById("lv2").style.borderTopColor="gainsboro"; document.getElementById("lv3").style.borderTopColor="gainsboro"; } } </script>
注:代码为本人原创。
时间: 2024-10-26 04:36:24