8ee50178f3
Correct: `Array.from()` (it’s a static method) Incorrect: `Array.join()` (doesn’t exist; it’s a prototype method) This patch uses the common `#` syntax to denote `.prototype.`.
22 lines
790 B
Markdown
22 lines
790 B
Markdown
### URLJoin
|
|
|
|
Joins all given URL segments together, then normalizes the resulting URL.
|
|
|
|
Use `String.prototype.join('/')` to combine URL segments, then a series of `String.prototype.replace()` calls with various regexps to normalize the resulting URL (remove double slashes, add proper slashes for protocol, remove slashes before parameters, combine parameters with `'&'` and normalize first parameter delimiter).
|
|
|
|
```js
|
|
const URLJoin = (...args) =>
|
|
args
|
|
.join('/')
|
|
.replace(/[\/]+/g, '/')
|
|
.replace(/^(.+):\//, '$1://')
|
|
.replace(/^file:/, 'file:/')
|
|
.replace(/\/(\?|&|#[^!])/g, '$1')
|
|
.replace(/\?/g, '&')
|
|
.replace('&', '?');
|
|
```
|
|
|
|
```js
|
|
URLJoin('http://www.google.com', 'a', '/b/cd', '?foo=123', '?bar=foo'); // 'http://www.google.com/a/b/cd?foo=123&bar=foo'
|
|
```
|