Regex for country code

Question

I\'m trying to write a regex for country code, which should limit to four characters maximum, only symbol allowed is a + sign. When the + is used, the + has to be in the beg

Answer 1

country codes can be of following types

• +1
• +91
• +223
• +1-224

The javascript regex that makes sure that the input is one if the

/^\+(\d{1}\-)?(\d{1,3})$/