FM / nth-check

/var/www/cobraambalaj/node_modules/nth-check/

/var/www/cobraambalaj/node_modules/nth-check

Name	Size	Mode	Actions
compile.js	1133	0644	edit dl rm
index.js	220	0644	edit dl rm
LICENSE	1260	0644	edit dl rm
package.json	1433	0644	edit dl rm
parse.js	839	0644	edit dl rm
README.md	1454	0644	edit dl rm

Edit: /var/www/cobraambalaj/node_modules/nth-check/README.md (1454B)

# nth-check [![Build Status](https://travis-ci.org/fb55/nth-check.svg)](https://travis-ci.org/fb55/nth-check)

A performant nth-check parser & compiler.

### About

This module can be used to parse & compile nth-checks, as they are found in CSS 3's `nth-child()` and `nth-last-of-type()`.

`nth-check` focusses on speed, providing optimized functions for different kinds of nth-child formulas, while still following the [spec](http://www.w3.org/TR/css3-selectors/#nth-child-pseudo).

### API

```js
var nthCheck = require("nth-check");
```

##### `nthCheck(formula)`

First parses, then compiles the formula.

##### `nthCheck.parse(formula)`

Parses the expression, throws a `SyntaxError` if it fails, otherwise returns an array containing two elements.

__Example:__

```js
nthCheck.parse("2n+3") //[2, 3]
```

##### `nthCheck.compile([a, b])`

Takes an array with two elements (as returned by `.parse`) and returns a highly optimized function.

If the formula doesn't match any elements, it returns [`boolbase`](https://github.com/fb55/boolbase)'s `falseFunc`, otherwise, a function accepting an _index_ is returned, which returns whether or not a passed _index_ matches the formula. (Note: The spec starts counting at `1`, the returned function at `0`).

__Example:__
```js
var check = nthCheck.compile([2, 3]);

check(0) //false
check(1) //false
check(2) //true
check(3) //false
check(4) //true
check(5) //false
check(6) //true
```

---
License: BSD

cmd: