ip 地址转长整型

/*防止运营商串改ip地址用*/

var ip2long = function(ip){ip = ip.split(".");return (((ip[0] << 24) | (ip[1] << 16) | (ip[2] << 8) | ip[3]) >>> 0)}

var long2ip = function(ip){return [(ip >> 24) & 0xff,(ip >> 16) & 0xff,(ip >> 8) & 0xff,ip & 0xff].join(".")}