30-seconds-of-code
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A collection of useful JavaScript snippets.
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Markdown
Returns `true` if the given string is an absolute URL, `false` otherwise.
Use a regular expression 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
```