如何实现电话号码验证？

Question

I've created a form and need to validate field by it's content (empty, .empty) and phone number field so phone number match regex (ukrainian phone number). this option does not work (

  const regex = /^\+[0-9]{3}\s\((\d+)\)-\d{3}-\d{2}-\d{2}/g
  const validate = (username, phone, comment) => {
    if ((username.length === 0 || phone.length === 0, comment.length === 0)) {
   
      setErrorEmpty('the field is empty !')
    
    } else if (!phone.match.regex) {
     
      setPhoneErr('the format is wrong !')
     
    } else {
      setValidated(true)
    }
  }

ukrainian number consists of 10 digits: ex: 0954343333 or (38)0954343333

Answer 1

The regex is correct but you need to use the regex correctly.

Here are the docs

Try this, which asserts if the phone matches the regex:

 } else if (!regex.test(phone)) {