const testStrFirst = 'foo';

'foobar'.includes(testStrFirst);

​

const testStrSecond = 'bar';

'foobar'.includes(testStrSecond);

​

const testStrNotMatch = 'baz';

'foobar'.includes(testStrNotMatch);

const testStrFirst = 'foobar';

testStrFirst.match('foo');

​

const testStrSecond = 'foobar';

testStrSecond.match('bar');

​

const testStrNotMatch = 'foobar';

testStrNotMatch.match('baz');

const testStrFirst = 'foo';

testStrFirst.match(/^(foo|bar)$/);

​

const testStrSecond = 'bar';

testStrSecond.match(/^(foo|bar)$/);

​

const testStrNotMatch = 'baz';

testStrNotMatch.match(/^(foo|bar)$/);