| 1 | [1]: https://secure.travis-ci.org/litejs/selector-lite.png
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| 2 | [2]: https://travis-ci.org/litejs/selector-lite
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| 3 | [3]: https://coveralls.io/repos/litejs/selector-lite/badge.png
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| 4 | [4]: https://coveralls.io/r/litejs/selector-lite
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| 5 | [npm package]: https://npmjs.org/package/selector-lite
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| 6 | [GitHub repo]: https://github.com/litejs/selector-lite
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| 7 |
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| 8 |
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| 9 | @version 0.1.1
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| 10 | @date 2015-05-10
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| 11 | @stability 2 - Unstable
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| 12 |
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| 13 |
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| 14 | Selector lite – [![Build][1]][2] [![Coverage][3]][4]
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| 15 | =============
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| 16 |
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| 17 | A small pure-JavaScript CSS selector engine.
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| 18 |
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| 19 | - no library dependencies
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| 20 | - CSS 3 Selector support
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| 21 | - only 2KB minified and 1KB gzipped
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| 22 |
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| 23 | Examples
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| 24 | --------
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| 25 |
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| 26 | ```javascript
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| 27 | var selector = require("selector-lite")
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| 28 |
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| 29 | // Can be used to implement browser built-in functions.
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| 30 |
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| 31 | function getElementById(id) {
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| 32 | return selector.find(this, "#" + id, true)
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| 33 | }
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| 34 | function getElementsByTagName(tag) {
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| 35 | return selector.find(this, tag)
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| 36 | }
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| 37 | function getElementsByClassName(sel) {
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| 38 | return selector.find(this, "." + sel.replace(/\s+/g, "."))
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| 39 | }
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| 40 | function querySelector(sel) {
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| 41 | return selector.find(this, sel, true)
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| 42 | }
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| 43 | function querySelectorAll(sel) {
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| 44 | return selector.find(this, sel)
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| 45 | }
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| 46 | ```
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| 47 |
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| 48 | Methods
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| 49 | -------
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| 50 |
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| 51 | - selector.`find(node, selector, returnFirstMatch)` - Find matching elements like querySelector.
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| 52 | - selector.`matches(node, selector)` - Returns a Boolean indicating whether or not
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| 53 | the element would be selected by the specified selector string.
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| 54 | - selector.`closest(selector)` - Returns the Element, descendant of this element
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| 55 | (or this element itself), that is the closest ancestor of the elements
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| 56 | selected by the selectors given in parameter.
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| 57 | - selector.`next(selector)` - Retrieves the next sibling that matches selector.
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| 58 | - selector.`prev(selector)` - Retrieves the preceding sibling that matches selector.
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| 59 |
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| 60 |
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| 61 | Custom selectors
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| 62 | ----------------
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| 63 |
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| 64 | Custom selector can be added to selector.selectorMap,
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| 65 | where method shortcuts are available (m->matches, c->closest, n->next, p->prev).
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| 66 |
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| 67 | - `_` - node.
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| 68 | - `v` - part between `()` in `:nth-child(2n+1)`.
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| 69 | - `a` and `b` can be used as temp variables.
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| 70 |
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| 71 | ```javascript
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| 72 | // Add `:input` selector
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| 73 | selector.selectorMap.input = "_.tagName=='INPUT'"
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| 74 |
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| 75 | // Add `:val()` selector
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| 76 | selector.selectorMap.val = "_.value==v"
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| 77 | ```
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| 78 |
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| 79 | Coding Style Guidelines
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| 80 | -----------------------
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| 81 |
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| 82 | - Use tabs for indentation, align with spaces
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| 83 | - Use lowerCamelCase for method and variable names
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| 84 | - Use UpperCamelCase for constructor names
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| 85 | - Commit files with Unix-style line endings
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| 86 | - Do not use spaces in file and directory names
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| 87 | Consider substituting a dash (-) where you would normally use spaces.
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| 88 | - Rebase before pushing
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| 89 | - Fix tests before push or pull request
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| 90 |
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| 91 |
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| 92 | External links
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| 93 | --------------
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| 94 |
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| 95 | - [GitHub repo][]
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| 96 | - [npm package][]
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| 97 | - [DOM spec](https://dom.spec.whatwg.org/)
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| 98 | - [Selectors Level 3](http://www.w3.org/TR/selectors/)
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| 99 |
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| 100 |
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| 101 |
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| 102 | ### Licence
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| 103 |
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| 104 | Copyright (c) 2015 Lauri Rooden <lauri@rooden.ee>
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| 105 | [The MIT License](http://lauri.rooden.ee/mit-license.txt)
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| 106 |
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| 107 |
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