Answers for "how to get browser registered email id in javascript"

code for email verification in front end using javascript

function validateEmail(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,}))$/;
    return re.test(String(email).toLowerCase());
}

email id domain check javascript

var myemail = '[email protected]'

if (/@yahoo.com\s*$/.test(myemail)) {
   console.log("it ends in @yahoo");
}