JavaScript jQuery Phone Number Validation Using Regex Pattern

Below is the regex to check valid phone number:

var regex = /(^(\+?[0-9]+)?((\s|\-|\.)[0-9]+)+$)|(^\(\+?[0-9]+\)((\s|\-|\.)[0-9]+)+$)|(^[0-9]+$)/i;

Regex check result as below:

+39 347 12 34 567 is valid = true
(+333)-696 900 is valid = true
(+333) -696 900 is valid = false
(+333)-696 900 is valid = true
(+333-696 900 is valid = false
+333-696 900 is valid = true
+333-696 900 is valid = true
+333-696 900 is valid = true
333-696 900 is valid = true
333-696 900 is valid = true
333-696 90 is valid = true
333-696 9 is valid = true
333-696 is valid = true
333-69 is valid = true
333-6 is valid = true
333- is valid = false
333 is valid = true