find css classes from html string

Asked Jan 13 '15 at 19:35

Active Jan 13 '15 at 19:38

Viewed 173 times

I have an HTML string which contains, among CSS and HTML markup, some tags with CSS classes. How do I get the collection of classes? I'd like to do:

htmlString.replace(patternForEveryClass, "somePrefix_"+capturedGroupIndex);

where the pattern must collect all classes into a tag, and capturedGroupIndex must be the index of the captured class.

This is the regex I have right now:

class="((\s|[a-zA-Z_-]{1}[\w-_]+)+)"

Is there a way to collect all instances within the class="" attribute? I cannot use DOM JS, just string scrapping.

edited Jan 13 '15 at 19:38

TylerH

asked Jan 13 '15 at 19:35

alexserver

1

Is your code JavaScript or do you use some other language for this? Also, why can't you use the DOM? – Lucas Trzesniewski Jan 13 '15 at 19:41
[You can't parse html with regex](http://stackoverflow.com/a/1732454/1529630) – Oriol Jan 13 '15 at 19:41
I'm using nodejs. I'm reading html files and doing some modifications to html markups. This has to be in server, not in browser. – alexserver Jan 13 '15 at 20:09
Well, you can use [jQuery in NodeJS](http://stackoverflow.com/a/4129032/3764814), it's a much better solution than regexes. – Lucas Trzesniewski Jan 13 '15 at 20:23

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