JavaScript+DiV密碼安全性驗證

來源:互聯網
上載者:User

    一個簡單的密碼安全性驗證的完整代碼,如果那位高人有更好的,希望能回複給我:

 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
 <html xmlns="http://www.w3.org/1999/xhtml" >
 <head>
 <title>密碼安全性驗證</title> 
 <script language=javascript>
    function hiddenLayer()
    {
     layer1.style.visibility="hidden";
     layer2.style.visibility="hidden";
     layer3.style.visibility="hidden";
    }
  function checkPassWordLevel(o) {
   var n=0;
   if (/\d/.test(o.value)) n ++; //包含數字
   if (/[a-z]/.test(o.value)) n ++; //包含小寫字母
   if (/[A-Z]/.test(o.value)) n ++; //包含大寫字母
   if (/\W/.test(o.value)) n ++; //包含其他字元
   if (o.value.length<5) n=1; //長度小於5位
   if(n==1)
   {
     layer1.style.visibility="visible";
     layer2.style.visibility="hidden";
     layer3.style.visibility="hidden";
   }
     else if(n==2)
     {
      layer1.style.visibility="hidden";
      layer2.style.visibility="visible";
      layer3.style.visibility="hidden";
     }
      else if(n>=3)
       {
          layer1.style.visibility="hidden";
          layer2.style.visibility="hidden";
          layer3.style.visibility="visible";
       }
      
  }
</script>
</head>
<body onload="hiddenLayer()">
       
        密碼:<input id="Password1" type="password" onkeyup="checkPassWordLevel(this)"/><br />
        <div id="layer1" style="z-index: 101; left: 57px; width: 150px; position: absolute;
            top: 39px; height: 20px; background-color: #ff0000">
            <span style="color: #ffffff"><strong>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; 不安全</strong></span></div>
        <div id="layer2" style="z-index: 102; left: 57px; width: 150px; position: absolute;
            top: 39px; height: 20px; background-color: #ffcc33">
            <span style="color: #ffffff"><strong>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 普通</strong></span></div>
        <div id="layer3" style="z-index: 102; left: 57px; width: 150px; position: absolute;
            top: 39px; height: 20px; background-color: #006600">
            <span style="color: #ffffff"><strong>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 很安全</strong></span></div>
</body>
</html>

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