Discussion on: Web Basics: How to Capitalize a Word in JavaScript

[Mihail Malo]

This is probably the best multi-word solution.
I totally forgot about \b, it is excellent.
I totally emulated it with /(?:^|\s)\w/, since capitalizing the whitespace doesn't do anything, but this is just so much better!

Does the i flag improve performance and not harm it though?

I'd potentially hoist the regex and callback constructions out of the function, although that may be crazy to do.

[diek]

Hi, the i doesn't does anything in this case, it is my mania of writing it always. The mdn's docu says this about \w:

Matches any alphanumeric character from the basic Latin alphabet, including the underscore. Equivalent to [A-Za-z0-9_]

So \w is case insesitive already.

[Mihail Malo]

OH NO

'mi ke$ha'.toLowerCase().replace(/\b\w/gi, c => c.toUpperCase())
//> "Mi Ke$Ha"

:'(

[diek]

That was expected, which result do you wanted?

[Mihail Malo]

Try my honestly unironically inferior regex and see:

'mi ke$ha'.toLowerCase().replace(/(?:^|\s)\w/g, c => c.toUpperCase())