How to create a Regexp To find all strings in JS files (or JSON)

Question

I am trying to extract all strings in js files. (to use the regexp in sublime text "search in all files")

For example, this is a one of the text files:

a='string1'
b='string2'
c="string3"
alert("string\"4")
alert('string\'5')

So, I have this RegExp:

/('.*?')|(".*?")/

And I found This:

['string1'].['string2',"string3"]

But I need also:

["string4","string5"]

How I do that?

(I am searching for RegExp solution - One RegExp sentence)

One more thing: The best solution is, if it also possibile to ignore all JS comments, inside the files. (To not extract JS strings, in comments)

Thank you.

Answer 1

You could try the below regex.

(['"])(?:\\\1|(?!\1).)*?\1

DEMO

• (['"]) captures ' or " quotes and stored it into group index 1.
• (?:\\\\\\1|(?!\\1).) This allows escaped character ( character which was captured by the group index 1 ). OR not of the captured character zero or more times.
• \\1 And it must be ended by the character which was captured by the group index 1.
• It also matches the strings like "string'5'" or 'string"5"'