在数组中，如何识别是IP的元素？

var regex = /^((25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$/;

function isIP(element) {
  var regex = /^((25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$/;
  return regex.test(element);
}

var array = ['192.168.0.1', 'google.com', '10.0.0.1', '256.0.0.1'];

for (var i = 0; i < array.length; i++) {
  if (isIP(array[i])) {
    console.log(array[i] + ' is an IP address');
  } else {
    console.log(array[i] + ' is not an IP address');
  }
}

192.168.0.1 is an IP address
google.com is not an IP address
10.0.0.1 is an IP address
256.0.0.1 is not an IP address