Can't get javascript length-related regex to work

Question

I'm trying to write a Javascript regex that matches words with less than 3 letters (and doesn't match longer words). I can't see why this doesn't work.

<html>
        <body>
                <script>
                var re = new RegExp("(\W|^)\w{0,2}(\W|$)", "gi");
                var text = "ab ab";
                var matched = re.test(text);
                document.write(matched)

                </script>
        </body>
</html>

I tried to get a minimum example, but I have more requirements, if the example is not complete I'll edit and add whatever is necessary.

SLaks · Accepted Answer · 2011-06-29 16:10:20Z

10

Your \s are being treated as Javascript escapes, so the actual value of the regex is "(W|^)w{0,2}(W|$)".

Instead, use a regex literal: /(\W|^)\w{0,2}(\W|$)/gi

answered Jun 29, 2011 at 16:10

SLaks

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1 Comment

cordsen Over a year ago

nice +1. I know it was in the OP, but I don't think you need the i modifier with \w jsfiddle.net/cordsen/VQRPK

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