JS中IP地址与整数相互转换的实现代码

主要用于在js判断用户输入的一个ip段是否合法,如:192.168.1.11-192.168.1.134

实现代码一:

function ipToNumber(ip) {

var num = 0;

if(ip == "") {

return num;

}

var aNum = ip.split(".");

if(aNum.length != 4) {

return num;

}

num += parseInt(aNum[0]) << 24;

num += parseInt(aNum[1]) << 16;

num += parseInt(aNum[2]) << 8;

num += parseInt(aNum[3]) << 0;

num = num >>> 0;//这个很关键,不然可能会出现负数的情况

return num;

}

function numberToIp(number) {

var ip = "";

if(number <= 0) {

return ip;

}

var ip3 = (number << 0 ) >>> 24;

var ip2 = (number << 8 ) >>> 24;

var ip1 = (number << 16) >>> 24;

var ip0 = (number << 24) >>> 24

ip += ip3 + "." + ip2 + "." + ip1 + "." + ip0;

return ip;

}

实现代码二:

//IP转成整型

function _ip2int(ip)

{

var num = 0;

ip = ip.split(".");

num = Number(ip[0]) * 256 * 256 * 256 + Number(ip[1]) * 256 * 256 + Number(ip[2]) * 256 + Number(ip[3]);

num = num >>> 0;

return num;

}

//整型解析为IP地址

function _int2iP(num)

{

var str;

var tt = new Array();

tt[0] = (num >>> 24) >>> 0;

tt[1] = ((num << 8) >>> 24) >>> 0;

tt[2] = (num << 16) >>> 24;

tt[3] = (num << 24) >>> 24;

str = String(tt[0]) + "." + String(tt[1]) + "." + String(tt[2]) + "." + String(tt[3]);

return str;

}

以上是 JS中IP地址与整数相互转换的实现代码 的全部内容, 来源链接: utcz.com/z/314026.html

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