正則表達式僅匹配逗號，但不包含在多個括號內

Question

好的，我有這種情況，逗號在括號內，我想匹配只在括號外的逗號。

Input : color-stop(50%,rgb(0,0,0)), color-stop(51%,rgb(0,0,0)), color-stop(100%,rgb(0,0,0))) 

Output(i'm looking for):color-stop(50%,rgb(0,0,0))**,** color-stop(51%,rgb(0,0,0))**,** color-stop(100%,rgb(0,0,0))) 

這是我的正則表達式： -

/(?![^(]*\)),/g 

不幸的是，它並沒有當有多個括號:(

Regex

Answer 1

這裏的工作這個正則表達式對您的輸入非常有用

,(?![^()]*(?:\([^()]*\))?\)) 

DEMO

說明：

,      ',' 
(?!      look ahead to see if there is not: 
    [^()]*     any character except: '(', ')' (0 or 
          more times) 
    (?:      group, but do not capture (optional): 
    \(      '(' 
    [^()]*     any character except: '(', ')' (0 or 
          more times) 
    \)      ')' 
)?      end of grouping, ? after the non-capturing group makes the 
          whole non-capturing group as optional. 
    \)      ')' 
)      end of look-ahead