JS regex test with validate input

Asked Mar 31 '20 at 00:57

Active Mar 31 '20 at 00:59

Viewed 222 times

/\w+/.test('@asd') // true
/\w+/.test('@') // false
/\w+/.test('asd') // true

Shouldn't the first one return false as well? consider there is a special character inside the string.

The test() method executes a search for a match between a regular expression and a specified string. Returns true or false.

please correct me on which part am i missing here to not getting the expected result.

edited Mar 31 '20 at 00:59

asked Mar 31 '20 at 00:57

Bill

1

`asd` inside the string matches, so no, the match doesn't fail. Your third line is incorrect too, `/\w+/.test('asd') // false` gives `true` – CertainPerformance Mar 31 '20 at 00:57
Thanks @CertainPerformance how can i made it search the entire string and return false. – Bill Mar 31 '20 at 00:58
1

@Bill Anchor it. `/^\w+$/.test('@asd')` – mpen Mar 31 '20 at 00:59
thanks @mpen oh i see, i guess you will have to do that way, is there another JS api which will do that? match? – Bill Mar 31 '20 at 01:00
1

@Bill No, there aren't any built-in methods that add the `^` and `$` as far as I'm aware. You can write one, but it's not quite as pretty. – mpen Mar 31 '20 at 01:03
Thanks very much @mpen for your help. – Bill Mar 31 '20 at 01:04

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