How to validate an IP in a textfield in AngularJS ? Currently I am using this code, but its not working in all cases . Any idea ?
ng-pattern='/^((([01]?[0-9]{1,2})|(2[0-4][0-9])|(25[0-5]))[.]){3}(([0-1]?[0-9]{1,2})|(2[0-4][0-9])|(25[0-5]))$/
Use:
/\b(?:(?: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]?)\b/
Matches 0.0.0.0 through 255.255.255.255
If you want to drop 0.0.0.0 and255.255.255.255 I suggest you to add additional if statement. Otherwise the regex will be too complicated.
Example with watcher:
$scope.ip = '1.2.3.4';
$scope.$watch(function () {
return $scope.ip;
},
function (newVal, oldVal) {
if (
newVal != '0.0.0.0' && newVal != '255.255.255.255' &&
newVal.match(/\b(?:(?: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]?)\b/))
{
// Match attempt succeeded
} else {
// Match attempt failed
}
})
Demo Fiddle
[Edit]
The best bet is to create directive, something like: <ip-input>
This example might helpful how to create directive for custom input: format-input-value-in-angularjs