leave_only

Removes all characters except the given ones.

Live example · edit rules or inputOpen in playground

rules

{
    phone: { leave_only: '0123456789' }
}

{ phone: { leave_only: '0123456789' } }

input

{
    phone: '+38 (044) 123-45-67'
}

{ phone: '+38 (044) 123-45-67' }

Validoutput

{
  "phone": "380441234567"
}