- ip2region.js npm 包支持：
npm install ip2region.js --save- javascript binding (nodejs / typescript) 提供了对 IPv6 的查询支持，具体使用文档请参考 javascript Binding，测试方式如下：
➜ javascript git:(master) node tests/search.app.js --db=../../data/ip2region_v6.xdb
ip2region xdb searcher test program
source xdb: ../../data/ip2region_v6.xdb (IPv6, vectorIndex)
type 'quit' to exit
ip2region>> ::
{region: |||, ioCount: 2, took: 158.64 μs}
ip2region>> 240e:3b7:3272:d8d0:3b7b:3ee0:1d39:848
{region: 中国|广东省|深圳市|家庭宽带, ioCount: 14, took: 256.98 μs}
ip2region>> 2001:3:ffff:ffff:ffff:ffff:ffff:ffff
{region: 美国|加利福尼亚州|洛杉矶|专线用户, ioCount: 21, took: 241.755 μs}
ip2region>>- 查询平均耗时：Razer 笔记本 / Ubuntu (电源均衡模式) + SATA SSD / VectorIndex 缓存，bench 结果如下：
➜ javascript git:(master) node tests/bench.app.js --db=../../data/ip2region_v6.xdb --src=../../data/ipv6_source.txt
Searcher: {"version": IPv6, "dbPath": ../../data/ip2region_v6.xdb, "handle": 21, "vectorIndex": 524288 "cBuffer": null}
Bench finished, {cachePolicy: vectorIndex, total: 34159862, took: 963.9443019528878 s, cost: 28.21862400828457 μs/op}3415.9 万个 IPv6 平均查询耗时为 28.2 微秒/次。