Question

I want to use JavaScript (I can also use jQuery) to do check whether a string matches the regex ^([a-z0-9]{5,})$, and get a true or false result.

match() seems to check whether part of a string matches a regex, not the whole thing. Does it solve the problem? Can I adapt it to solve the problem? How?

Answer 1

Use regex.test() if all you want is a boolean result:

console.log(/^([a-z0-9]{5,})$/.test('abc1')); // false

console.log(/^([a-z0-9]{5,})$/.test('abc12')); // true

console.log(/^([a-z0-9]{5,})$/.test('abc123')); // true

…and you could remove the () from your regexp since you’ve no need for a capture.