ipv4/ipv6正则校验

function is_ipv4(str){
var reg = /^((25[0-5]|2[0-4]\d|1\d\d|[1-9]\d|\d).){3}(25[0-5]|2[0-4]\d|1\d\d|[1-9]\d|\d)$/;

return reg.test(str);
}

function is_ipv6(str){
var reg = /^((([\dA-Fa-f]{1,4}:){7}([\dA-Fa-f]{1,4}|:))|(([\dA-Fa-f]{1,4}:){6}(:[\dA-Fa-f]{1,4}|((25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)(.(25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)){3})|:))|(([\dA-Fa-f]{1,4}:){5}(((:[\dA-Fa-f]{1,4}){1,2})|:((25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)(.(25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)){3})|:))|(([\dA-Fa-f]{1,4}:){4}(((:[\dA-Fa-f]{1,4}){1,3})|((:[\dA-Fa-f]{1,4})?:((25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)(.(25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)){3}))|:))|(([\dA-Fa-f]{1,4}:){3}(((:[\dA-Fa-f]{1,4}){1,4})|((:[\dA-Fa-f]{1,4}){0,2}:((25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)(.(25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)){3}))|:))|(([\dA-Fa-f]{1,4}:){2}(((:[\dA-Fa-f]{1,4}){1,5})|((:[\dA-Fa-f]{1,4}){0,3}:((25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)(.(25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)){3}))|:))|(([\dA-Fa-f]{1,4}:){1}(((:[\dA-Fa-f]{1,4}){1,6})|((:[\dA-Fa-f]{1,4}){0,4}:((25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)(.(25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)){3}))|:))|(:(((:[\dA-Fa-f]{1,4}){1,7})|((:[\dA-Fa-f]{1,4}){0,5}:((25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)(.(25[0-5]2[0-4]\d|1\d\d|[1-9]?\d)){3}))|:)))(%.\+)?$/;

return reg.test(str);
}