You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
154 lines
6.1 KiB
Markdown
154 lines
6.1 KiB
Markdown
# url-parse
|
|
|
|
[](https://www.npmjs.com/package/url-parse)[](https://github.com/unshiftio/url-parse/actions?query=workflow%3ACI+branch%3Amaster)[](https://coveralls.io/r/unshiftio/url-parse?branch=master)
|
|
|
|
[](https://saucelabs.com/u/url-parse)
|
|
|
|
**`url-parse` was created in 2014 when the WHATWG URL API was not available in
|
|
Node.js and the `URL` interface was supported only in some browsers. Today this
|
|
is no longer true. The `URL` interface is available in all supported Node.js
|
|
release lines and basically all browsers. Consider using it for better security
|
|
and accuracy.**
|
|
|
|
The `url-parse` method exposes two different API interfaces. The
|
|
[`url`](https://nodejs.org/api/url.html) interface that you know from Node.js
|
|
and the new [`URL`](https://developer.mozilla.org/en-US/docs/Web/API/URL/URL)
|
|
interface that is available in the latest browsers.
|
|
|
|
In version `0.1` we moved from a DOM based parsing solution, using the `<a>`
|
|
element, to a full Regular Expression solution. The main reason for this was
|
|
to make the URL parser available in different JavaScript environments as you
|
|
don't always have access to the DOM. An example of such environment is the
|
|
[`Worker`](https://developer.mozilla.org/en/docs/Web/API/Worker) interface.
|
|
The RegExp based solution didn't work well as it required a lot of lookups
|
|
causing major problems in FireFox. In version `1.0.0` we ditched the RegExp
|
|
based solution in favor of a pure string parsing solution which chops up the
|
|
URL into smaller pieces. This module still has a really small footprint as it
|
|
has been designed to be used on the client side.
|
|
|
|
In addition to URL parsing we also expose the bundled `querystringify` module.
|
|
|
|
## Installation
|
|
|
|
This module is designed to be used using either browserify or Node.js it's
|
|
released in the public npm registry and can be installed using:
|
|
|
|
```
|
|
npm install url-parse
|
|
```
|
|
|
|
## Usage
|
|
|
|
All examples assume that this library is bootstrapped using:
|
|
|
|
```js
|
|
'use strict';
|
|
|
|
var Url = require('url-parse');
|
|
```
|
|
|
|
To parse an URL simply call the `URL` method with the URL that needs to be
|
|
transformed into an object.
|
|
|
|
```js
|
|
var url = new Url('https://github.com/foo/bar');
|
|
```
|
|
|
|
The `new` keyword is optional but it will save you an extra function invocation.
|
|
The constructor takes the following arguments:
|
|
|
|
- `url` (`String`): A string representing an absolute or relative URL.
|
|
- `baseURL` (`Object` | `String`): An object or string representing
|
|
the base URL to use in case `url` is a relative URL. This argument is
|
|
optional and defaults to [`location`](https://developer.mozilla.org/en-US/docs/Web/API/Location)
|
|
in the browser.
|
|
- `parser` (`Boolean` | `Function`): This argument is optional and specifies
|
|
how to parse the query string. By default it is `false` so the query string
|
|
is not parsed. If you pass `true` the query string is parsed using the
|
|
embedded `querystringify` module. If you pass a function the query string
|
|
will be parsed using this function.
|
|
|
|
As said above we also support the Node.js interface so you can also use the
|
|
library in this way:
|
|
|
|
```js
|
|
'use strict';
|
|
|
|
var parse = require('url-parse')
|
|
, url = parse('https://github.com/foo/bar', true);
|
|
```
|
|
|
|
The returned `url` instance contains the following properties:
|
|
|
|
- `protocol`: The protocol scheme of the URL (e.g. `http:`).
|
|
- `slashes`: A boolean which indicates whether the `protocol` is followed by two
|
|
forward slashes (`//`).
|
|
- `auth`: Authentication information portion (e.g. `username:password`).
|
|
- `username`: Username of basic authentication.
|
|
- `password`: Password of basic authentication.
|
|
- `host`: Host name with port number. The hostname might be invalid.
|
|
- `hostname`: Host name without port number. This might be an invalid hostname.
|
|
- `port`: Optional port number.
|
|
- `pathname`: URL path.
|
|
- `query`: Parsed object containing query string, unless parsing is set to false.
|
|
- `hash`: The "fragment" portion of the URL including the pound-sign (`#`).
|
|
- `href`: The full URL.
|
|
- `origin`: The origin of the URL.
|
|
|
|
Note that when `url-parse` is used in a browser environment, it will default to
|
|
using the browser's current window location as the base URL when parsing all
|
|
inputs. To parse an input independently of the browser's current URL (e.g. for
|
|
functionality parity with the library in a Node environment), pass an empty
|
|
location object as the second parameter:
|
|
|
|
```js
|
|
var parse = require('url-parse');
|
|
parse('hostname', {});
|
|
```
|
|
|
|
### Url.set(key, value)
|
|
|
|
A simple helper function to change parts of the URL and propagating it through
|
|
all properties. When you set a new `host` you want the same value to be applied
|
|
to `port` if has a different port number, `hostname` so it has a correct name
|
|
again and `href` so you have a complete URL.
|
|
|
|
```js
|
|
var parsed = parse('http://google.com/parse-things');
|
|
|
|
parsed.set('hostname', 'yahoo.com');
|
|
console.log(parsed.href); // http://yahoo.com/parse-things
|
|
```
|
|
|
|
It's aware of default ports so you cannot set a port 80 on an URL which has
|
|
`http` as protocol.
|
|
|
|
### Url.toString()
|
|
|
|
The returned `url` object comes with a custom `toString` method which will
|
|
generate a full URL again when called. The method accepts an extra function
|
|
which will stringify the query string for you. If you don't supply a function we
|
|
will use our default method.
|
|
|
|
```js
|
|
var location = url.toString(); // http://example.com/whatever/?qs=32
|
|
```
|
|
|
|
You would rarely need to use this method as the full URL is also available as
|
|
`href` property. If you are using the `URL.set` method to make changes, this
|
|
will automatically update.
|
|
|
|
## Testing
|
|
|
|
The testing of this module is done in 3 different ways:
|
|
|
|
1. We have unit tests that run under Node.js. You can run these tests with the
|
|
`npm test` command.
|
|
2. Code coverage can be run manually using `npm run coverage`.
|
|
3. For browser testing we use Sauce Labs and `zuul`. You can run browser tests
|
|
using the `npm run test-browser` command.
|
|
|
|
## License
|
|
|
|
[MIT](LICENSE)
|