Dieser Code stammt aus einem persönlichen Projekt. Er sollte als ziemlich umfassender und effektiver Verifizierungscode für IP-bezogene Informationen betrachtet werden. Er wird für die Front-End-Verifizierung verwendet
/* ****************** */
/* 判断IP地址是否合法 */
var judgeIpIsLegal = function(ipAddr){
var regIps = /^(((25[0-5]|2[0-4]\d|1\d{2}|[1-9]\d|[0-9])\.){3}(25[0-5]|2[0-4]\d|1\d{2}|[1-9]\d|[0-9]))$/;
return regIps.test(ipAddr);
}
/* IP地址转换为二进制字符串 */
/* 例如：172.16.4.235 --> 10101100000100000000010011101011 */
var praseIpToBinary = function(ipAddress){
var numArray = ipAddress.split(".");
if(numArray.length != 4){
alert("输入的IP有误");
return;
}
var returnIpStr = "";
for (var i = 0; i < 4; i++) {
var curr_num = numArray[i];
var number_Bin = parseInt(curr_num);
number_Bin = number_Bin.toString(2);
var iCount = 8-number_Bin.length;
for (var j = 0; j < iCount; j++) {
number_Bin = "0"+number_Bin;
}
returnIpStr += number_Bin;
}
return returnIpStr;
}
/* 判断子网掩码是否合法 */
/* 子网掩码必须是 1 和 0组成的连续的一段 如 11110000 */
var judgeSubnetMask = function(ipAddress){
var binaryIpString = praseIpToBinary(ipAddress).toString();
var subIndex = binaryIpString.lastIndexOf("1")+1;
var frontHalf = binaryIpString.substring(0,subIndex);
var backHalf = binaryIpString.substring(subIndex);
if(frontHalf.indexOf("0") != -1 || backHalf.indexOf("1") != -1){
return false;
}else{
return true;
}
}
/* 两个IP地址做 与 操作 返回结果 */
/* 该功能主要用来实现 IP地址和子网掩码 相与，获取当前IP地址的IP地址段 */
/* 以此来验证输入的网关地址是否合法 */
var getIPsAndResult = function(ipAddr1,ipAddr2){
var ipArray1 = ipAddr1.split(".");
var ipArray2 = ipAddr2.split(".");
var returnResult = "";
if(ipArray1.length != 4 || ipArray2.length != 4 ){
alert("输入的IP有误");
return;
}
for (var i = 0; i < 4; i++) {
var number1 = parseInt(ipArray1[i]);
var number2 = parseInt(ipArray2[i]);
returnResult += number1&number2;
if(i<3){
returnResult += ".";
}
}
return returnResult;
}
/* 判断网关地址是否合法 */
var judgeGatewayResult = function(ipAddr,subnetMask,gateway){
var andResult1 = getIPsAndResult(ipAddr,subnetMask);
var andResult2 = getIPsAndResult(gateway,subnetMask);
if(andResult1 == andResult2){
return true;
}else{
return false;
}
}
