This bit of Ruby gives you the canonical Redis command groupings in JavaScript (or JSON, if you prefer) directly from redis.io.

Redis Commands.rb

require 'mechanize'
require 'json'

commands = {}
groups = {}
groupLabels = {}
groupOrder = []

page = Mechanize.new.get "http://redis.io/commands"

page.search( "#commands li" ).each do |el|
  group = el["data-group"]
  command = el.search( ".command a" ).first.text.split(" ").first
  commands[command] = group
  groups[group] ||= []
  groups[group] << command
end

page.search( "#commands nav a" ).each do |li|
  group = li["href"].sub('#', '')
  next unless group.size > 0
  label = li.text
  groupLabels[group] = label
  groupOrder << group
end

puts <<-JS
RedisCommands = #{JSON.dump commands};
RedisCommandsByGroup = #{JSON.dump groups};
RedisCommandGroupLabels = #{JSON.dump groupLabels};
RedisCommandGroupOrder = #{JSON.dump groupOrder};
JS

Sample Redis Commands.js

// Sample output

RedisCommands = {"APPEND":"string","AUTH":"connection","BGREWRITEAOF":"server","BGSAVE":"server","BITCOUNT":"string","BITOP":"string","BLPOP":"list","BRPOP":"list","BRPOPLPUSH":"list","CLIENT":"server","CONFIG":"server","DBSIZE":"server","DEBUG":"server","DECR":"string","DECRBY":"string","DEL":"generic","DISCARD":"transactions","DUMP":"generic","ECHO":"connection","EVAL":"scripting","EVALSHA":"scripting","EXEC":"transactions","EXISTS":"generic","EXPIRE":"generic","EXPIREAT":"generic","FLUSHALL":"server","FLUSHDB":"server","GET":"string","GETBIT":"string","GETRANGE":"string","GETSET":"string","HDEL":"hash","HEXISTS":"hash","HGET":"hash","HGETALL":"hash","HINCRBY":"hash","HINCRBYFLOAT":"hash","HKEYS":"hash","HLEN":"hash","HMGET":"hash","HMSET":"hash","HSET":"hash","HSETNX":"hash","HVALS":"hash","INCR":"string","INCRBY":"string","INCRBYFLOAT":"string","INFO":"server","KEYS":"generic","LASTSAVE":"server","LINDEX":"list","LINSERT":"list","LLEN":"list","LPOP":"list","LPUSH":"list","LPUSHX":"list","LRANGE":"list","LREM":"list","LSET":"list","LTRIM":"list","MGET":"string","MIGRATE":"generic","MONITOR":"server","MOVE":"generic","MSET":"string","MSETNX":"string","MULTI":"transactions","OBJECT":"generic","PERSIST":"generic","PEXPIRE":"generic","PEXPIREAT":"generic","PING":"connection","PSETEX":"string","PSUBSCRIBE":"pubsub","PTTL":"generic","PUBLISH":"pubsub","PUNSUBSCRIBE":"pubsub","QUIT":"connection","RANDOMKEY":"generic","RENAME":"generic","RENAMENX":"generic","RESTORE":"generic","RPOP":"list","RPOPLPUSH":"list","RPUSH":"list","RPUSHX":"list","SADD":"set","SAVE":"server","SCARD":"set","SCRIPT":"scripting","SDIFF":"set","SDIFFSTORE":"set","SELECT":"connection","SET":"string","SETBIT":"string","SETEX":"string","SETNX":"string","SETRANGE":"string","SHUTDOWN":"server","SINTER":"set","SINTERSTORE":"set","SISMEMBER":"set","SLAVEOF":"server","SLOWLOG":"server","SMEMBERS":"set","SMOVE":"set","SORT":"generic","SPOP":"set","SRANDMEMBER":"set","SREM":"set","STRLEN":"string","SUBSCRIBE":"pubsub","SUNION":"set","SUNIONSTORE":"set","SYNC":"server","TIME":"server","TTL":"generic","TYPE":"generic","UNSUBSCRIBE":"pubsub","UNWATCH":"transactions","WATCH":"transactions","ZADD":"sorted_set","ZCARD":"sorted_set","ZCOUNT":"sorted_set","ZINCRBY":"sorted_set","ZINTERSTORE":"sorted_set","ZRANGE":"sorted_set","ZRANGEBYSCORE":"sorted_set","ZRANK":"sorted_set","ZREM":"sorted_set","ZREMRANGEBYRANK":"sorted_set","ZREMRANGEBYSCORE":"sorted_set","ZREVRANGE":"sorted_set","ZREVRANGEBYSCORE":"sorted_set","ZREVRANK":"sorted_set","ZSCORE":"sorted_set","ZUNIONSTORE":"sorted_set"};
RedisCommandsByGroup = {"string":["APPEND","BITCOUNT","BITOP","DECR","DECRBY","GET","GETBIT","GETRANGE","GETSET","INCR","INCRBY","INCRBYFLOAT","MGET","MSET","MSETNX","PSETEX","SET","SETBIT","SETEX","SETNX","SETRANGE","STRLEN"],"connection":["AUTH","ECHO","PING","QUIT","SELECT"],"server":["BGREWRITEAOF","BGSAVE","CLIENT","CLIENT","CLIENT","CLIENT","CONFIG","CONFIG","CONFIG","DBSIZE","DEBUG","DEBUG","FLUSHALL","FLUSHDB","INFO","LASTSAVE","MONITOR","SAVE","SHUTDOWN","SLAVEOF","SLOWLOG","SYNC","TIME"],"list":["BLPOP","BRPOP","BRPOPLPUSH","LINDEX","LINSERT","LLEN","LPOP","LPUSH","LPUSHX","LRANGE","LREM","LSET","LTRIM","RPOP","RPOPLPUSH","RPUSH","RPUSHX"],"generic":["DEL","DUMP","EXISTS","EXPIRE","EXPIREAT","KEYS","MIGRATE","MOVE","OBJECT","PERSIST","PEXPIRE","PEXPIREAT","PTTL","RANDOMKEY","RENAME","RENAMENX","RESTORE","SORT","TTL","TYPE"],"transactions":["DISCARD","EXEC","MULTI","UNWATCH","WATCH"],"scripting":["EVAL","EVALSHA","SCRIPT","SCRIPT","SCRIPT","SCRIPT"],"hash":["HDEL","HEXISTS","HGET","HGETALL","HINCRBY","HINCRBYFLOAT","HKEYS","HLEN","HMGET","HMSET","HSET","HSETNX","HVALS"],"pubsub":["PSUBSCRIBE","PUBLISH","PUNSUBSCRIBE","SUBSCRIBE","UNSUBSCRIBE"],"set":["SADD","SCARD","SDIFF","SDIFFSTORE","SINTER","SINTERSTORE","SISMEMBER","SMEMBERS","SMOVE","SPOP","SRANDMEMBER","SREM","SUNION","SUNIONSTORE"],"sorted_set":["ZADD","ZCARD","ZCOUNT","ZINCRBY","ZINTERSTORE","ZRANGE","ZRANGEBYSCORE","ZRANK","ZREM","ZREMRANGEBYRANK","ZREMRANGEBYSCORE","ZREVRANGE","ZREVRANGEBYSCORE","ZREVRANK","ZSCORE","ZUNIONSTORE"]};
RedisCommandGroupLabels = {"generic":"Keys","string":"Strings","hash":"Hashes","list":"Lists","set":"Sets","sorted_set":"Sorted Sets","pubsub":"Pub/Sub","transactions":"Transactions","scripting":"Scripting","connection":"Connection","server":"Server"};
RedisCommandGroupOrder = ["generic","string","hash","list","set","sorted_set","pubsub","transactions","scripting","connection","server"];