Javascript 判断两个IP是否在同一网段实例代码

2019-11-19 18:48:27

字体：大中小

来源：转载

供稿：网友

Javascript 判断两个IP是否在同一网段

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>

需要的朋友可以拿去参考。感谢阅读，希望能帮助到大家，谢谢大家对本站的支持！

上一篇：js实现右键菜单功能

下一篇：详解JS-- 浮点数运算处理