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65 lines
2.3 KiB
Markdown
65 lines
2.3 KiB
Markdown
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# resolve-pathname [![Travis][build-badge]][build] [![npm package][npm-badge]][npm]
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[build-badge]: https://img.shields.io/travis/mjackson/resolve-pathname/master.svg?style=flat-square
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[build]: https://travis-ci.org/mjackson/resolve-pathname
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[npm-badge]: https://img.shields.io/npm/v/resolve-pathname.svg?style=flat-square
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[npm]: https://www.npmjs.org/package/resolve-pathname
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[resolve-pathname](https://www.npmjs.com/package/resolve-pathname) resolves URL pathnames identical to the way browsers resolve the pathname of an `<a href>` value. The goals are:
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- 100% compatibility with browser pathname resolution
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- Pure JavaScript implementation (no DOM dependency)
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## Installation
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Using [npm](https://www.npmjs.com/):
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$ npm install --save resolve-pathname
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Then, use as you would anything else:
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```js
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// using ES6 modules
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import resolvePathname from 'resolve-pathname';
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// using CommonJS modules
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var resolvePathname = require('resolve-pathname');
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```
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The UMD build is also available on [unpkg](https://unpkg.com):
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```html
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<script src="https://unpkg.com/resolve-pathname"></script>
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```
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You can find the library on `window.resolvePathname`.
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## Usage
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```js
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import resolvePathname from 'resolve-pathname';
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// Simply pass the pathname you'd like to resolve. Second
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// argument is the path we're coming from, or the current
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// pathname. It defaults to "/".
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resolvePathname('about', '/company/jobs'); // /company/about
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resolvePathname('../jobs', '/company/team/ceo'); // /company/jobs
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resolvePathname('about'); // /about
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resolvePathname('/about'); // /about
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// Index paths (with a trailing slash) are also supported and
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// work the same way as browsers.
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resolvePathname('about', '/company/info/'); // /company/info/about
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// In browsers, it's easy to resolve a URL pathname relative to
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// the current page. Just use window.location! e.g. if
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// window.location.pathname == '/company/team/ceo' then
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resolvePathname('cto', window.location.pathname); // /company/team/cto
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resolvePathname('../jobs', window.location.pathname); // /company/jobs
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```
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## Prior Work
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- [url.resolve](https://nodejs.org/api/url.html#url_url_resolve_from_to) - node's `url.resolve` implementation for full URLs
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- [resolve-url](https://www.npmjs.com/package/resolve-url) - A DOM-dependent implementation of the same algorithm
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