正则表达式在 javascript 拆分方法中不起作用，但在在线测试网站上起作用

Question

i have this Regex (?=(?:(?:[^']*'){2})*[^']*$)\\\\n working on online test website perfectly but not in Below code. i have a string with multiple \n and also some with in " double Quotation but i want to ignore all \n with in " double Quotes.

let input = "a,b,c\n'aa\nbb\ncc'\nhello world";
    
    const lines = input.split("(?=(?:(?:[^']*'){2})*[^']*$)\\\\n");
    console.log(lines); 

i am getting this output

want this Output:

[0]: "a,b,c"
    [1]: "aa\nbb\ncc"
    [2]: "hello world"

Answer 1

Why so complicated?

 let input = "a,b,c \n 'aa\nbb\ncc' \n hello world"; console.log(input.split(' \n '))

Answer 2

There was some ambiguity between your explanation and your sample data. You were talking about double quotes as a delimiter in your input, but it was the opposite in the sample. There were also too many escape characters before the \n in the regex. \\\\n becomes \n . Not \\n because in a javascript string \n stands for the actual newline character. No need to esacpe it in the regex.

 let input = 'a,b,c\n"aa\nbb\ncc"\nhello world'; let lines = input.split(/(?=(?:(?:[^"]*"){2})*[^"]*$)\n/); console.log(lines);