convert-cssxpath v1.0.2

#convert-cssxpath

Yet another CSS to XPath converter

Simple and correct XPath output, that's all

Install

$ npm i convert-cssxpath

Usage

Require:

var cssxpath = require('convert-cssxpath');

Convert and get string:

cssxpath.convert('a b > c');

Or call interactive console:

cssxpath.ask();

Convert and get object (dev mode):

cssxpath.convert('a:nth', true);

// returns object: 
    { xpath: '//a[(position() - 1) mod 2 = 0]',
      warning: 'XPath condition [position() >= 1] was omitted',
      error: undefined }

Convert

When using convert(css) function - logs are printed directly in console. For example:

console.log(cssxpath.convert('[]invalid-css'));

Empty string is returned. Console logs:

// ERROR! Invalid CSS selector.

Developer mode makes it easy to overwrite logs behavior. For example:

var css = 'a b > c';
var xpath = cssxpath.convert(css, true);
console.log( xpath.error ? `Seems your CSS '${css}' was wrong!` : css );

To turn on Developer mode and receive object instead of string, simply put 'true' as the second parameter after css. Logs are not printed in console in Developer mode.

Pseudo-classes

Use :not(selector). Multiply not() arguments are fully supported:

cssxpath.convert(':not(a b > c[attr])');

Output:

//*[not(ancestor::a and parent::b and self::c[@attr])]

*Deep nesting is experimental in CSS, so it's better to avoid it.

Use :nth-of-type(nth):

cssxpath.convert('a:nth-of-type(odd)');

Output:

//a[(position() - 1) mod 2 = 0]

Use :nth-child(nth). N-based syntax (e.g. -3n+2 etc) if fully supported for all nth- pseudos:

cssxpath.convert('a+b:nth-child(n+3)');

Output:

//a/following-sibling::b[1][count(preceding-sibling::*) >= 2]

What is next

Coming soon: support of remaining pseudo-classes:

• :nth-last-child(n)
• :nth-last-of-type(n)

Test

$ npm test - run over 250 tests

Changelog

v.1.0.1 - full support of :nth pseudos; documentation; dev mode; error fixes

v.0.0.4 - full support of :not(selector)