Package Exports

string-extract-class-names

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Readme

string-extract-class-names

Extract classes (or id's) from a string into an array

Install

$ npm install --save string-extract-class-names

Purpose

This library extracts the classes and id's from the string and returns them all put into an array.

I use string-extract-class-names to identify and delete unused CSS selectors in the library email-remove-unused-css.

Since deleting of people's code is a risky task, a huge responsibility falls onto parts which identify what should be deleted. That's why I extracted the string-extract-class-names from the email-remove-unused-css and set up a proper test suite.

Currently there 196 checks in test.js running on AVA. I'm checking all the possible (and impossible) strings in and around the class and id names to be 100% sure only correct class and id names are put into the results array.

Examples

var extract = require('string-extract-class-names')

// chop off tag, then the rest after the space character:
extract('div.first.second#third a[target=_blank]')
// => ['.first', '.second', '#third']

extract('?#id1#id2? #id3#id4> p > #id5#id6')
// => ['#id1', '#id2', '#id3', '#id4', '#id5', '#id6']

API

extract(
  string               // String. Input.
)
// => Extracted classes/id's in an array

Contributing & testing

All contributions welcome. This library uses Standard JavaScript notation. See test.js. It's very minimalistic testing setup using AVA.

npm test

If you see anything incorrect whatsoever, raise an issue. PR's are welcome — fork, hack and PR.