Kiểm tra định dạng email bằng Javascript

let isEmailAddress = val => {
	return /^[\w-]+(\.[\w-]+)*@[\w-]+(\.[\w-]+)+$/.test(val) || /w+([-+.]w+)*@w+([-.]w+)*.w+([-.]w+)*/.test(val);
}
console.log(isEmailAddress('gmail.com@.com'))//false
console.log(isEmailAddress('gmail.com@gm.com'))//true

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