JavaScript判断并获取注册表中可信任站点的方法

<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>获取并判断可信任站点(域名和IP)</title>
<style type="text/css">
.mainContent{ 
 margin: 0 auto; 
 margin-top: 100px; 
 margin-left: 100px; 
} 
</style>
<script type="text/javascript" src="js/testRegister.js"></script>
</head>
<body>
<div class="mainContent">
  <input type="button" value="是否是可信站点" id="testRegister" />
</div>
</body>
</html>

/* 
 * 判断可信任站点(可信任站点可以为IP地址也可以为域名) 
 */ 
window.onload = function(){ 
  var btnObj = document.getElementById("testRegister"); 
  btnObj.onclick = function(){ 
    if(navigator.userAgent.indexOf("MSIE") == -1){  
      alert("只支持IE浏览器！"); 
      return; 
    } 
    var hostname = window.location.hostname; 
    var WshShell = new ActiveXObject("WScript.Shell"); 
    //IP的正则表达式 
    var reg = /^(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])(\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])){3}$/; 
    //根据域名判断是否存在可信站点 
    if(hostname != "localhost" && !reg.test(hostname)){ 
      var domainSFlag = false,domainEFlag = false,domainSEFlag = false,domainSSEFlag = true; 
      var hostnamePrefix = "",hostnameSuffix = ""; 
      var indexOf = hostname.indexOf("."); 
      if(indexOf != -1){ 
        hostnamePrefix = hostname.substring(0, indexOf); 
        hostnameSuffix = hostname.substring(indexOf+1, hostname.length); 
        try{ 
          WshShell.RegRead("HKCU\\Software\\Microsoft\\Windows\\CurrentVersion\\Internet Settings\\ZoneMap\\Domains\\" + hostname + "\\http");   
        }catch(e){ 
          domainEFlag = true; 
        } 
        if(domainEFlag){ 
          try{ 
            WshShell.RegRead("HKCU\\Software\\Microsoft\\Windows\\CurrentVersion\\Internet Settings\\ZoneMap\\Domains\\" + hostnameSuffix + "\\" + hostnamePrefix + "\\http");   
          }catch(e){ 
            domainSFlag = true; 
          } 
        } 
        //判断其合法性 
        if(domainEFlag && domainSFlag){ 
          try{ 
            WshShell.RegRead("HKCU\\Software\\Microsoft\\Windows\\CurrentVersion\\Internet Settings\\ZoneMap\\Domains\\" + hostnameSuffix + "\\" + hostnamePrefix + "\\*");   
            var tipInfo = "<div>您加入的可信站点不是合法的可信站点，请以<span style='color:red;'>http://</span>开头！</div>"; 
            alert(tipInfo); 
            return; 
          }catch(e){} 
        } 
      }else{ 
        try{ 
          WshShell.RegRead("HKCU\\Software\\Microsoft\\Windows\\CurrentVersion\\Internet Settings\\ZoneMap\\Domains\\" + hostname + "\\http");   
        }catch(e){ 
          domainSEFlag = true; 
        } 
        //判断其合法性 
        if(domainSEFlag){ 
          try{ 
            WshShell.RegRead("HKCU\\Software\\Microsoft\\Windows\\CurrentVersion\\Internet Settings\\ZoneMap\\Domains\\" + hostname + "\\*");   
            var tipInfo = "<div>您加入的可信站点不是合法的可信站点，请以<span style='color:red;'>http://</span>开头！</div>"; 
            alert(tipInfo); 
            return; 
          }catch(e){} 
        } 
      } 
      if((domainSFlag && domainEFlag) || domainSEFlag){ 
        var tipInfo = "域名为" + hostname + "的可信任站点不存在！"; 
        alert(tipInfo); 
        alert(tipInfo); 
        return; 
      } 
    }else{ 
      //获取可信任站点IP,数字2000没法解释，主要涉及到注册表的问题 
      var str = [];  
      for(var i = 1;i < 2000;i++){  
        try{ 
          str[i] = WshShell.RegRead("HKCU\\Software\\Microsoft\\Windows\\CurrentVersion\\Internet Settings\\ZoneMap\\Ranges\\Range" + i + "\\:Range"); 
        }catch(e){ 
        } 
      } 
      var count = true; 
      for(var i = 1;i < str.length;i++){  
        if(str[i] == undefined){ 
          continue; 
        }else{ 
          if(str[i] == hostname){ 
            count = false; 
            break; 
          } 
        } 
      } 
      if(count){ 
        var tipInfo = "IP为" + hostname+"可信任站点不存在！"; 
        alert(tipInfo);   
        return 
      } 
    } 
    alert("存在可信任站点！"); 
  } 
}