javascript - How do I use a regular expression to match a fixed-length number with a hyphen in the middle? -
i new regular expressions , wanted know how write regular expression following:
validates string 123-0123456789. numeric values , hyphen should allowed. also, verify there 3 numeric chars before hyphen , 10 chars after hyphen.
the given answers won't work strings more digits (like '012-0123456789876'), need:
str.match(/^\d{3}-\d{10}$/) != null;
or
/^\d{3}-\d{10}$/.test(str);
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