javascript implementation to verify IP address and other relevant information code
- 2020-06-07 04:02:25
- OfStack
This code is extracted from the personal project, should be able to calculate on the IP is quite comprehensive and effective related information verification code, used for front-end verification
/* ****************** */
/* judge IP Whether the address is legal */
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 Address conversion to 2 Base string */
/* Such as: 172.16.4.235 --> 10101100000100000000010011101011 */
var praseIpToBinary = function(ipAddress){
var numArray = ipAddress.split(".");
if(numArray.length != 4){
alert(" The input of IP wrong ");
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;
}
/* Determines whether the subnet mask is valid */
/* The subnet mask must be 1 and 0 Composed of continuous 1 Period of Such as 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;
}
}
/* two IP Address for with operation Returns the result */
/* This function is mainly used for implementation IP Address and subnet mask To get the current IP Address of the IP addresses */
/* Verify that the gateway address entered is valid */
var getIPsAndResult = function(ipAddr1,ipAddr2){
var ipArray1 = ipAddr1.split(".");
var ipArray2 = ipAddr2.split(".");
var returnResult = "";
if(ipArray1.length != 4 || ipArray2.length != 4 ){
alert(" The input of IP wrong ");
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;
}
/* Determine if the gateway address is valid */
var judgeGatewayResult = function(ipAddr,subnetMask,gateway){
var andResult1 = getIPsAndResult(ipAddr,subnetMask);
var andResult2 = getIPsAndResult(gateway,subnetMask);
if(andResult1 == andResult2){
return true;
}else{
return false;
}
}
This is the end of this article, I hope you enjoy it.