Reg表達式：爲什麼「名稱」不作爲匹配返回

Question

以下正則表達式返回「Gray」和「James」作爲匹配項。我不明白爲什麼「名稱」不匹配。你可以解釋嗎？

"Name: Gray, James"[/(\w+), (\w+)/] 

Answer 1

這裏有一個解釋你的正則表達式是如何工作的

Match the regular expression below and capture its match into backreference number 1 «(\w+)» 
    Match a single character that is a 「word character」 (letters, digits, and underscores) «\w+» 
     Between one and unlimited times, as many times as possible, giving back as needed (greedy) «+» 
Match the characters 「, 」 literally «, » 
Match the regular expression below and capture its match into backreference number 2 «(\w+)» 
    Match a single character that is a 「word character」 (letters, digits, and underscores) «\w+» 
     Between one and unlimited times, as many times as possible, giving back as needed (greedy) «+» 

灰色，詹姆斯
（\ w +），（\ w +）

Name不遵循逗號。

Answer 2

匹配旁邊一個字一個逗號沒有空格「（\ w +），」

匹配一個逗號和空格後一個字「（\ w +）」