Split a String by Commas, Ignoring Commas within Double Quotes Using JavaScript

To address the challenge of splitting a string by commas while preserving double-quoted segments, we can utilize regular expressions in JavaScript. Here's how:

var str = 'a, b, c, "d, e, f", g, h';
var arr = str.match(/(".*?"|[^",\s] )(?=\s*,|\s*$)/g);

// Handle the case of no matches to prevent errors
arr = arr || [];

// Iterate over the matches and display them
for (var i = 0; i 
This regular expression employs two capturing groups to match substrings of interest:
Group 1: Matches double-quoted segments ("d, e, f") using a greedy operator (.*?) to capture everything within double quotes.
Group 2: Matches any other character sequence (e.g., "a", "g") that does not contain double quotes, commas, or whitespace characters ([^",\s] ).
The lookahead assertion (?=\s*,|\s*$) ensures that the match is followed by either a whitespace and comma or the end of the string. This ensures that we only capture comma-separated segments.
By matching both quoted and unquoted segments, this solution accurately splits the given string into an array of six elements: ["a", "b", "c", "d, e, f", "g", "h"].