Regular expression in javascript trouble with hyphen

Question

I am new to regular expressions and am having trouble setting one up. What I want is to allow only alphabets, numbers, commas, periods and hyphens. This is what I got:

var letters = /^[a-zA-Z0-9,. ]*$/;

I am having trouble figuring out how to include the hyphen. Please assist.

By hyphens, do you mean only the regular dash (-), or other hyphens? — Guffa
– Guffa, Commented Oct 24, 2015 at 12:10

Guffa · Accepted Answer · 2015-10-24 12:13:08Z

1

You can include the minus where it won't be interpreted as a range:

var letters = /^[-a-zA-Z0-9,. ]*$/;

You can also use backslash to specify that it's a literal character:

var letters = /^[a-zA-Z0-9,\-. ]*$/;

answered Oct 24, 2015 at 12:13

Guffa

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Guilherme Fidelis · Accepted Answer · 2015-10-24 12:15:23Z

0

var letters = /^[a-zA-Z0-9\-\,. ]+$/;

answered Oct 24, 2015 at 12:15

Guilherme Fidelis

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