Javascript 判断两个IP是否在同一网段-js教程-PHP中文网

Javascript 判断两个IP是否在同一网段

php中文网

发布： 2016-06-01 09:54:38

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2170人浏览过

以下脚本不做ip格式的判断，只判断两个ip是否在同一网段。

例子，Javascript判断两个IP是否在同一网段。

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
  
  <HEAD>
    <TITLE>
      IP段信息检测_www.manongjc.com
    </TITLE>
    <script language="JavaScript" type="text/javascript">
      function checkSameNetMask(value1, value2, netmask) {
        var ip1 = new Array();
        var ip2 = new Array();
        var nm = new Array();
        ip1 = value1.split(".");
        ip2 = value2.split(".");
        nm = netmask.split(".");
        var ip1_2s = "";
        var ip2_2s = "";
        var inm2s = "";
        var index = 0;
        for (index = 0; index < 4; index++) {
          var ip_1 = new Array();
          var ip_2 = new Array();
          var n_m = new Array();
          ip_1 = parseInt(ip1[index]).toString(2);
          ip_2 = parseInt(ip2[index]).toString(2);
          n_m = parseInt(nm[index]).toString(2);
          var tindex;
          for (tindex = 0; tindex < (8 - ip_1.length); tindex++) {
            ip1_2s += "0";
          }
          ip1_2s += ip_1;
          for (tindex = 0; tindex < (8 - ip_2.length); tindex++) {
            ip2_2s += "0";
          }
          ip2_2s += ip_2;
          for (tindex = 0; tindex < (8 - n_m.length); tindex++) {
            inm2s += "0";
          }
          inm2s += n_m;
        }
        var len = inm2s.length;
        var ip_12 = new Array();
        var ip_22 = new Array();
        var n_m_2 = new Array();
        ip_12 = ip1_2s.split("");
        ip_22 = ip2_2s.split("");
        n_m_2 = inm2s.split("");
        for (index = 0; index < len; index++) {
          if (n_m_2[index] == "1") {
            if (ip_12[index] != ip_22[index]) {
              alert("不在同一网段");
              return false;;
            }
          }
        }
        alert("在同一网段");
        return true;
      }
    </script>
  </HEAD>
  
  <BODY>
    <input name="Ip1" id="Ip1" maxlength=15>
    <br>
    <input name="Ip2" id="Ip2" maxlength=15>
    <br>
    <input name="netmask" id="netmask" maxlength=15>
    <input type="button" value="计算" onClick="checkSameNetMask( document.getElementById('Ip1').value , document.getElementById('Ip2').value , document.getElementById('netmask').value ); ">
  </BODY>

</HTML>

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需要的码农可以拿去参考。