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109 lines
3.5 KiB
109 lines
3.5 KiB
4 years ago
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# node-url
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[](https://travis-ci.org/defunctzombie/node-url)
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This module has utilities for URL resolution and parsing meant to have feature parity with node.js core [url](http://nodejs.org/api/url.html) module.
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```js
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var url = require('url');
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```
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## api
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Parsed URL objects have some or all of the following fields, depending on
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whether or not they exist in the URL string. Any parts that are not in the URL
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string will not be in the parsed object. Examples are shown for the URL
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`'http://user:pass@host.com:8080/p/a/t/h?query=string#hash'`
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* `href`: The full URL that was originally parsed. Both the protocol and host are lowercased.
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Example: `'http://user:pass@host.com:8080/p/a/t/h?query=string#hash'`
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* `protocol`: The request protocol, lowercased.
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Example: `'http:'`
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* `host`: The full lowercased host portion of the URL, including port
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information.
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Example: `'host.com:8080'`
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* `auth`: The authentication information portion of a URL.
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Example: `'user:pass'`
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* `hostname`: Just the lowercased hostname portion of the host.
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Example: `'host.com'`
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* `port`: The port number portion of the host.
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Example: `'8080'`
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* `pathname`: The path section of the URL, that comes after the host and
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before the query, including the initial slash if present.
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Example: `'/p/a/t/h'`
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* `search`: The 'query string' portion of the URL, including the leading
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question mark.
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Example: `'?query=string'`
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* `path`: Concatenation of `pathname` and `search`.
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Example: `'/p/a/t/h?query=string'`
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* `query`: Either the 'params' portion of the query string, or a
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querystring-parsed object.
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Example: `'query=string'` or `{'query':'string'}`
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* `hash`: The 'fragment' portion of the URL including the pound-sign.
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Example: `'#hash'`
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The following methods are provided by the URL module:
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### url.parse(urlStr, [parseQueryString], [slashesDenoteHost])
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Take a URL string, and return an object.
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Pass `true` as the second argument to also parse
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the query string using the `querystring` module.
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Defaults to `false`.
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Pass `true` as the third argument to treat `//foo/bar` as
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`{ host: 'foo', pathname: '/bar' }` rather than
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`{ pathname: '//foo/bar' }`. Defaults to `false`.
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### url.format(urlObj)
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Take a parsed URL object, and return a formatted URL string.
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* `href` will be ignored.
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* `protocol` is treated the same with or without the trailing `:` (colon).
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* The protocols `http`, `https`, `ftp`, `gopher`, `file` will be
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postfixed with `://` (colon-slash-slash).
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* All other protocols `mailto`, `xmpp`, `aim`, `sftp`, `foo`, etc will
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be postfixed with `:` (colon)
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* `auth` will be used if present.
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* `hostname` will only be used if `host` is absent.
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* `port` will only be used if `host` is absent.
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* `host` will be used in place of `hostname` and `port`
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* `pathname` is treated the same with or without the leading `/` (slash)
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* `search` will be used in place of `query`
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* `query` (object; see `querystring`) will only be used if `search` is absent.
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* `search` is treated the same with or without the leading `?` (question mark)
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* `hash` is treated the same with or without the leading `#` (pound sign, anchor)
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### url.resolve(from, to)
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Take a base URL, and a href URL, and resolve them as a browser would for
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an anchor tag. Examples:
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url.resolve('/one/two/three', 'four') // '/one/two/four'
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url.resolve('http://example.com/', '/one') // 'http://example.com/one'
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url.resolve('http://example.com/one', '/two') // 'http://example.com/two'
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