Check if absolute URL

OSCC · JavaScript, String, Browser, Regexp · Oct 20, 2020

Checks if the given string is an absolute URL.

• Use RegExp.prototype.test() to test if the string is an absolute URL.

const isAbsoluteURL = str => /^[a-z][a-z0-9+.-]*:/.test(str);

isAbsoluteURL('https://google.com'); // true
isAbsoluteURL('ftp://www.myserver.net'); // true
isAbsoluteURL('/foo/bar'); // false

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