JS根据子网掩码，网关计算出所有IP地址范围示例

// 验证IP的正则
var ip_reg = /^(25[0-5]|2[0-4][0-9]|[01]&＃63;[0-9][0-9]&＃63;)\.(25[0-5]|2[0-4][0-9]|[01]&＃63;[0-9][0-9]&＃63;)\.(25[0-5]|2[0-4][0-9]|[01]&＃63;[0-9][0-9]&＃63;)\.(25[0-5]|2[0-4][0-9]|[01]&＃63;[0-9][0-9]&＃63;)$/;

// 验证子网掩码的正则
var mask_reg = /^(254|252|248|240|224|192|128|0)\.0\.0\.0|255\.(254|252|248|240|224|192|128|0)\.0\.0|255\.255\.(254|252|248|240|224|192|128|0)\.0|255\.255\.255\.(254|252|248|240|224|192|128|0)$/;

/***　　把IP地址转换成二进制格式*　　@param string  ip  待转换的IP的地址*/
function ip_to_binary(ip)
{
  if (ip_reg.test(ip)) {
    var ip_str = "",
      ip_arr = ip.split(".");

    for (var i = 0; i <4; i++) {
      curr_num = ip_arr[i];
      number_bin = parseInt(curr_num);
      number_bin = number_bin.toString(2);
      count = 8 - number_bin.length;
      for (var j = 0; j = 2){
    var len1 = doubleArrays[0].length;
    var len2 = doubleArrays[1].length;
    var newlen = len1 * len2;
    var temp = new Array(newlen);
    var index = 0;
    for(var i = 0; i  -1) {
    ip_list.splice(gateway_index, 1);
  }

  return ip_list;
}