Newton's Poleless Magnet


    2.0.0 • Public • Published


    This fork exists solely to prevent the parser from infinitely looping when an invalid expression is parsed such as:




    Slick is a standalone selector engine that is totally slick. Slick is split in 2 components: the Finder and the Parser. The Finder's job is to find nodes on a webpage, the Parser's job is to create a javascript object representation of any css selector.

    Slick allows you to:

    • Create your own custom pseudo-classes
    • Use the Parser by itself.
    • Find nodes in XML documents.

    The Finder

    Find nodes in the DOM

    search context for selector

    Search this context for any nodes that match this selector.


    • selector: String or SelectorObject
    • (optional) context: document or node or array of documents or nodes
    • (optional) append: Array or Object with a push method

    Returns: append argument or Array of 0 or more nodes"#foo > bar.baz") → [<bar>, <bar>, <bar>]"li > a", [<ol>, <ul>]) → [<a>, <a>, <a>]"#foo > bar.baz", document, []) → [<bar>, <bar>, <bar>]

    find first in context with selector or null

    Find the first node in document that matches selector or null if none are found.


    • selector: String or SelectorObject
    • (optional) context: document or node or array of documents or nodes

    Returns: Element or null

    slick.find("#foo > bar.baz") → <bar>
    slick.find("#does-not-exist", node) → null

    node matches selector?

    Does this node match this selector?


    • node
    • node, String or SelectorObject

    Returns: true or false

    slick.matches(<div class=rocks>, "") → true
    slick.matches(<div class=lame>, "") → false
    slick.matches(<div class=lame>, <div class=rocks>) → false

    context contains node?

    Does this context contain this node? Is the context a parent of this node?


    • context: document or node
    • node: node

    Returns: true or false

    slick.contains(<ul>, <li>) → true
    slick.contains(<body>, <html>) → false

    The Parser

    Parse a CSS selector string into a JavaScript object

    parse selector into object

    Parse a CSS Selector String into a Selector Object.

    Expects: String

    Returns: SelectorObject

    slick.parse("#foo > bar.baz") → SelectorObject


    #foo > bar.baz

    	{ "combinator":" ", "tag":"*", "id":"foo" },
    	{ "combinator":">", "tag":"bar", "classList": ["baz"], "classes": [{"value":"baz", "match": RegExp }]}

    h1, h2, ul > li, .things

    	[{ "combinator":" ", "tag": "h1" }],
    	[{ "combinator":" ", "tag": "h2" }],
    	[{ "combinator":" ", "tag": "ul" }, { "combinator": ">", "tag": "li" }],
    	[{ "combinator":" ", "tag": "*", "classList": ["things"], "classes": [{"value": "things", "match": RegExp }] }]


    npm i atom-slick

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    MIT (

    Last publish


    • atom-team
    • benogle
    • nathansobo
    • kevinsawicki