regular expression for phone number

[programAngel]

var patt1=/[0-9-]/;

Is the above regular expression will work for the following string?:
974-45645654-45456445
5464565464
4654-4554565

I am trying to do regular expression for phone number and by that I mean every string that including only number and the "-" char.
but I don't want the "-" to appear in the beginning.

[Padonak]

http://weitz.de/regex-coach/

[007Julien]

/^\d[\d-]+$/.test(onePhoneNumber) // will be true for a valid phone number

This tests onePhoneNumber beginning with a digit followed by one or more digits or hyphen.
But with more precision, you must be able to make better, as for example with these post codes...