js apply regex to string 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: js string to regex

const regex = new RegExp('https:\\/\\/\\w*\\.\\w*.*', 'g');

Example 3: js match any number string

const match = 'some/path/123'.match(/\/(\d+)/)
const id = match[1] // '123'