21 lines
483 B
Markdown
21 lines
483 B
Markdown
---
|
|
title: isAbsoluteURL
|
|
tags: string,browser,regexp,intermediate
|
|
firstSeen: 2017-12-31T14:42:45+02:00
|
|
lastUpdated: 2020-10-20T23:02:01+03:00
|
|
---
|
|
|
|
Checks if the given string is an absolute URL.
|
|
|
|
- Use `RegExp.prototype.test()` to test if the string is an absolute URL.
|
|
|
|
```js
|
|
const isAbsoluteURL = str => /^[a-z][a-z0-9+.-]*:/.test(str);
|
|
```
|
|
|
|
```js
|
|
isAbsoluteURL('https://google.com'); // true
|
|
isAbsoluteURL('ftp://www.myserver.net'); // true
|
|
isAbsoluteURL('/foo/bar'); // false
|
|
```
|