30 lines
941 B
Markdown
30 lines
941 B
Markdown
---
|
|
title: Join URL segments
|
|
tags: string,regexp
|
|
cover: digital-nomad-2
|
|
firstSeen: 2018-01-16T15:53:03+02:00
|
|
lastUpdated: 2020-10-22T20:24:44+03:00
|
|
---
|
|
|
|
Joins all given URL segments together, then normalizes the resulting URL.
|
|
|
|
- Use `Array.prototype.join()` to combine URL segments.
|
|
- Use a series of `String.prototype.replace()` calls with various regular expressions 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'
|
|
```
|