Jinx Runes explained
There's one set of runes for Jinx on patch
11.8
that is the clear favorite for LoL players and pros alike. The best Jinx Runes on the position 
Adc are Precision as the primary path and
Domination as the secondary path with a pick rate of 60%. Besides runes you should take a look on Jinx Build and if you are interested in pro matches take a look at Jinx Probuilds. If you want to discuss
Jinx then you should visit the champion subreddit.
Primary path on Jinx
Precision improves attack and sustained damage on Jinx troughout the match. Most of high elo players – and our LoL pros in the the major regions – have agreed that
Conqueror is the best keystone rune to run on
Jinx. This keystone rune provides additional power in the later stages of a game. As soon as
Conqueror is fully charged, Jinx deals additional damage and gains life steal. This is usually followed up by taking
Presence of Mind,
Legend: Bloodline and
Coup de Grace.
Presence of Mind helps Jinx with the mana problems by restoring missing mana, if a champion is killed.
Legend: Bloodline gives life steal, which aids in winning damage trades and fights in the later stages of the match. Jinx deals with
Coup de Grace more damage to targets with low health.
Secondary path on Jinx
When it comes to your secondary path, most
Jinx players prefer to go with
Domination.
Domination improves burst damage and assassination tools on Jinx. On the
Domination path, the best runes for Jinx are
Taste of Blood and
Ravenous Hunter.
Taste of Blood heals Jinx as soon as you damage an opposing champion.
Ravenous Hunter is the final rune of the
Domination path. This rune gives some survivability during short fights and damage trades during the laning phase. The additional health is nothing to scoff at and can mean the difference between winning or losing a battle.