I am trying to validate inputText to make sure it is a correctly formatted email address. However, I'm getting the following issues:

let reg = /^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/;
    if (reg.test(emailText) === false) {
      alert('Email is Not Correct');
      // this.setState({email: emailText});
      return false;
    } else {
      // this.setState({email: emailText});
      alert('Email is Correct');
    }

Works with some issues the following:

hello@gmail.com // works
hello.world@gmail.com // works
some.thing@gm.ci.co // will not work and is a real email address

Another other issue is that my characters count is limited. How do I remove the limit? I need to be able to have unlimited characters