CODE EXAMPLE FOR JAVASCRIPT

js email regex

//! check email is valid
function checkEmail(email) {
  const re =
    /^(([^<>()[].,;:s@"]+(.[^<>()[].,;:s@"]+)*)|(".+"))@(([[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}])|(([a-zA-Z-0-9]+.)+[a-zA-Z]{2,}))$/;
  if (re.test(email.value.trim())) {
    console.log('email is valid') 
  } else {
    console.log('email is not valid')
  }
}