JavaScript & CoffeeScript function for sorting IP addresses

ipsort.coffee

ipSort = ( ipAddressArray ) ->
	ipAddressArray.sort ( a, b ) ->
		a = a.split '.'
		b = b.split '.'
		for i of a
			if ( a[i] = parseInt a[i] ) < ( b[i] = parseInt b[i] )
				return -1
			else if a[i] > b[i]
				return 1
		return 0

ipsort.js

ipSort = function( ipAddressArray )
{
	return ipAddressArray.sort( function( a, b )
	{
		a = a.split( '.' );
		b = b.split( '.' );
		for( var i = 0; i < a.length; i++ )
		{
			if( ( a[i] = parseInt( a[i] ) ) < ( b[i] = parseInt( b[i] ) ) )
				return -1;
			else if( a[i] > b[i] )
				return 1;
		}
		return 0;
	} );
}

Whelp, this is more useful than I expected. Thanks!

Thanks for sharing this gist! If anyone needs to sort a collection of objects by an IP property, you can derive a comparator from the function above:

  ipComparator = (a, b) ->
    a = a?.split('.') or []
    b = b?.split('.') or []

    for i of a
      if (a[i] = parseInt a[i], 10) < (b[i] = parseInt b[i], 10)
        return -1
      else if a[i] > b[i]
        return 1

    return 0

...and use it like this:

networkCollection.sort((a, b) => ipComparator(a.ip, b.ip))