js ip段 子网掩码
时间: 2023-07-23 10:21:26 浏览: 34
JS中可以通过以下方式获取IP段和子网掩码:
```javascript
var ip = "192.168.1.100";
var subnetMask = "255.255.255.0";
// 将IP地址转换为32位二进制数
var ipBinary = ip.split(".").map(function(num){
return ("00000000" + parseInt(num).toString(2)).substr(-8);
}).join("");
// 将子网掩码转换为32位二进制数
var subnetMaskBinary = subnetMask.split(".").map(function(num){
return ("00000000" + parseInt(num).toString(2)).substr(-8);
}).join("");
// 计算子网地址
var subnetAddressBinary = "";
for(var i = 0; i < 32; i++){
subnetAddressBinary += ipBinary[i] & subnetMaskBinary[i];
}
var subnetAddress = "";
for(var i = 0; i < 32; i += 8){
subnetAddress += parseInt(subnetAddressBinary.substr(i, 8), 2) + ".";
}
subnetAddress = subnetAddress.slice(0, -1);
// 计算广播地址
var broadcastAddressBinary = "";
for(var i = 0; i < 32; i++){
broadcastAddressBinary += (subnetAddressBinary[i] == "1" || subnetMaskBinary[i] == "0") ? "1" : "0";
}
var broadcastAddress = "";
for(var i = 0; i < 32; i += 8){
broadcastAddress += parseInt(broadcastAddressBinary.substr(i, 8), 2) + ".";
}
broadcastAddress = broadcastAddress.slice(0, -1);
// 输出结果
console.log("IP地址: " + ip);
console.log("子网掩码: " + subnetMask);
console.log("子网地址: " + subnetAddress);
console.log("广播地址: " + broadcastAddress);
```
注意,以上代码只是一个简单的示例,实际应用中还需要考虑一些特殊情况,例如子网掩码不是标准的CIDR格式等。
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