javascript - Regular Expression for number and dash

Question

Currently I write the regex like this: /^([d+]*-)+([d]*-)+([d])*$/

I want the result follow this pattern 00-123-456-789 or 00123456789 (dash between number group or no dash at all)

• not 00-123--457-789
• or -00-123-456-789-
• or -00123456789-
• or 00-123-456-789-

How can I modify the regex to matches the pattern above?

Answer 1

Try something like this

/^(d+-?)+d+$/