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jppommet/int2ip.js

Last active November 5, 2024 08:56
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javascript conversion from ip address to long integer and vice versa
Raw
int2ip.js
function int2ip (ipInt) {
return ( (ipInt>>>24) +'.' + (ipInt>>16 & 255) +'.' + (ipInt>>8 & 255) +'.' + (ipInt & 255) );
}
Raw
ip2int.js
function ip2int(ip) {
return ip.split('.').reduce(function(ipInt, octet) { return (ipInt<<8) + parseInt(octet, 10)}, 0) >>> 0;
}
@elovin
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elovin commented Dec 20, 2023 •
edited
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@filecage

Would it not be shorter then to to replace <<8 with * 256 ?
It seems like the >>> 0 is then obsolete.

'192.168.0.230'.split('.').reduce(function(ipInt, octet) { return (ipInt * 256) + parseInt(octet, 10)}, 0); 
// 3232235750

@filecage
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@elovin indeed, it is!

My example was to explain the difference between the two methods because someone was confused with the negative value being incorrect, which I demonstrated is not true. :)

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