下面是到目前为止的代码
<!doctype html>
<html ng-app>
<head>
<script src="http://code.angularjs.org/1.1.2/angular.min.js"></script>
<script type="text/javascript">
function Ctrl($scope) {
var initial = {text: 'initial value'};
$scope.myModel = angular.copy(initial);
$scope.revert = function() {
$scope.myModel = angular.copy(initial);
$scope.myForm.$setPristine();
}
}
</script>
</head>
<body>
<form name="myForm" ng-controller="Ctrl">
myModel.text: <input name="input" ng-model="myModel.text">
<p>myModel.text = {{myModel.text}}</p>
<p>$pristine = {{myForm.$pristine}}</p>
<p>$dirty = {{myForm.$dirty}}</p>
<button ng-click="revert()">Set pristine</button>
</form>
</body>
</html>
如何发出警报browser close or url redirect如果有一些未保存的数据，以便用户可以决定是否继续？
像这样的事情应该这样做：
<!doctype html>
<html ng-app="myApp">
<head>
<script src="http://code.angularjs.org/1.1.2/angular.min.js"></script>
<script type="text/javascript">
function Ctrl($scope) {
var initial = {text: 'initial value'};
$scope.myModel = angular.copy(initial);
$scope.revert = function() {
$scope.myModel = angular.copy(initial);
$scope.myForm.$setPristine();
}
}
angular.module("myApp", []).directive('confirmOnExit', function() {
return {
link: function($scope, elem, attrs) {
window.onbeforeunload = function(){
if ($scope.myForm.$dirty) {
return "The form is dirty, do you want to stay on the page?";
}
}
$scope.$on('$locationChangeStart', function(event, next, current) {
if ($scope.myForm.$dirty) {
if(!confirm("The form is dirty, do you want to stay on the page?")) {
event.preventDefault();
}
}
});
}
};
});
</script>
</head>
<body>
<form name="myForm" ng-controller="Ctrl" confirm-on-exit>
myModel.text: <input name="input" ng-model="myModel.text">
<p>myModel.text = {{myModel.text}}</p>
<p>$pristine = {{myForm.$pristine}}</p>
<p>$dirty = {{myForm.$dirty}}</p>
<button ng-click="revert()">Set pristine</button>
</form>
</body>
</html>
请注意，此示例中不会触发 $locationChangeStart 的侦听器，因为 AngularJS 在这样一个简单的示例中不处理任何路由，但它应该可以在实际的 Angular 应用程序中工作。
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