Question

I need to remove all JavaScript comments from a JavaScript source using the JavaScript RegExp object.

What I need is the pattern for the RegExp.

So far, I’ve found this:

compressed = compressed.replace(/\/\*.+?\*\/|\/\/.*(?=[\n\r])/g, '');

This pattern works OK for:

/* I'm a comment */

or for:

/*
 * I'm a comment aswell
*/

But doesn’t seem to work for the inline:

// I'm an inline comment

I’m not quite an expert for RegEx and it’s patterns, so I need help.

Also, I’ would like to have a RegEx pattern which would remove all those HTML-like comments.

<!-- HTML Comment //--> or <!-- HTML Comment -->

And also those conditional HTML comments, which can be found in various JavaScript sources.

Thanks.

Answer 1

try this,

(\/\*[\w\'\s\r\n\*]*\*\/)|(\/\/[\w\s\']*)|(\<![\-\-\s\w\>\/]*\>)

should work 🙂