Adverbial use meaning that something is done suitably or in a satisfactory way. Often appears in set or business-like expressions such as よろしくやる and よろしく処理する, and can sound vague depending on context.
彼は転勤先でもよろしくやっている。
He is getting along well even at his new posting.
Please handle the details appropriately according to the situation.
please treat me favorably; please take care of it; best regards
Very common formula used in greetings, requests, entrusting something to someone, and sending regards. Politeness depends heavily on what follows: よろしくお願いします is polite, while よろしく or よろしく頼む is more casual.
Nice to meet you. I'm Tanaka. I look forward to working with you.
Please take care of reception tomorrow.
Please give my regards to your mother.
just like ...; as if one were ...
Pattern use after a noun or noun-like phrase, as in 役者よろしく, meaning that someone acts like or in the manner of that thing. This is more written, stylized, or expressive than everyday のように.
He bowed dramatically, just like an actor.
She pointed out problem after problem in the materials as if she were an expert.
Old-fashioned set pattern よろしく…べし, meaning that something should certainly or properly be done. It is mainly encountered in archaic, literary, or intentionally old-style writing rather than ordinary conversation.
An old admonition says, "Students should by all means fulfill their duty."