let re = /^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*\W).{8,}$/g

let passwords = ["Fernando", "f3rn4", "F3rnand0!", "fernando123!"]

passwords.forEach( p => {
    let matches = p.match(re)
    if(!matches) console.log(p, "INVALID PASSWORD")
    else console.log(p, "is a valid password!")
})

/*
Fernando INVALID PASSWORD
f3rn4 INVALID PASSWORD
F3rnand0! is a valid password!
fernando123! INVALID PASSWORD
*/