JavaScript Regular Expression length issue

Question

Good day,

I'm trying to get the length of an value interred into a input field. The value entered needs to be 13 characters long, no less no more. And must be numerical numbers.

Here is my JS code:

value = '8312258066038';
re = new RegExp('^\d{13}$');
alert(re.match(value));

The answer is supposed to be true if the value is 13 characters.

You have an error in your code: TypeError: re.match is not a function. I recommend to read developer.mozilla.org/en-US/docs/JavaScript/Guide/…. — Felix Kling
– Felix Kling, Commented Feb 22, 2013 at 10:26

Garfield · Accepted Answer · 2013-02-22 10:27:00Z

2

Use test() not match()

value = '8312258066038';
re = /^\d{13}$/;
alert(re.test(value));

answered Feb 22, 2013 at 10:27

Garfield

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