AngularJS Simple Example
HTML
<div ng-app ng-controller="MyController">
<form id="target" name="target" ng-submit="go()">
<input type="text" ng-model="form.myInput" required>
<input id="other" type="submit" value="Go" ng-disabled="target.$invalid">
</form>
</div>
JavaScript
function MyController($scope) {
$scope.form = {};
$scope.form.myInput = 'Hello there';
$scope.go = function(){
console.log($scope.form);
}
}