regex telefone javascript code example

Example 1: pattern telefone js

/^\([1-9]{2}\) (?:[2-8]|9[1-9])[0-9]{3}\-[0-9]{4}$/

Example 2: validador de telefone javascript

function validPhone (phone) {
    var regex = new RegExp('^\\([0-9]{2}\\)((3[0-9]{3}-[0-9]{4})|(9[0-9]{3}-[0-9]{5}))$');
    return regex.test(phone);
}

validPhone('(31)3534-2323'); //Valido
validPhone('(31)9923-23288'); //Valido
validPhone('(31)9923-3288'); //Invalido
validPhone('(31)2323-5443'); //Invalido