regular expressions and escape sequences javascript code example

Example 1: javascript escape regex

function escapeRegExp(input) {
	const source = typeof input === 'string' || input instanceof String ? input : '';
	return source.replace(/[-[/\]{}()*+?.,\\^$|#\s]/g, '\\$&');
}

Example 2: regular expression javascript

// Tests website Regular Expression against document.location (current page url)
if (/^https\:\/\/example\.com\/$/.exec(document.location)){
	console.log("Look mam, I can regex!");
}