Javascript AngularJS插入警报框
我对AngularJS完全陌生,一直以来都被这个问题困扰着。我希望能够有条件地在页面上显示Javascript alertbox。 假设我想做这样的事情:Javascript AngularJS插入警报框,javascript,angularjs,Javascript,Angularjs,我对AngularJS完全陌生,一直以来都被这个问题困扰着。我希望能够有条件地在页面上显示Javascript alertbox。 假设我想做这样的事情: <!DOCTYPE html> <html> <head> <script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.3.14/angular.min.js"></script> </head&
<!DOCTYPE html>
<html>
<head>
<script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.3.14/angular.min.js"></script>
</head>
<body>
<div ng-app="myApp" ng-controller="personCtrl">
<script>{{warning}}</script>
</div>
<script>
var app = angular.module('myApp', []);
app.controller('personCtrl', function($scope) {
$scope.warning = "alert('This is a warning');";
});
</script>
</body>
</html>
var myApp = angular.module('myApp',[]);
function MyCtrl($scope) {
$scope.name = 'Superhero';
if ($scope.name==='Superhero') {
alert("hello");
}
}
var myApp = angular.module('myApp',[]);
function MyCtrl($scope) {
$scope.name = 'Superhero';
$scope.$watch('name', function(newVal, oldVal) {
alert("hello");
})
}
我还尝试了trustAsHtml并在字符串中添加了脚本标记,但都没有显示alertbox。有人能告诉我出了什么问题吗?您希望$scope.warning是一个函数,而不是执行函数或字符串的结果
$scope.warning = function () { alert('This is a warning'); };
这样以后可以在视图中调用它:warning应该显示警报
或者,由于警报是一个函数,您可能只想将其用作$scope。警告:
$scope.warning = alert;
+
将产生相同的结果。实际上应该是这样的:
<!DOCTYPE html>
<html>
<head>
<script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.3.14/angular.min.js"></script>
</head>
<body>
<div ng-app="myApp" ng-controller="personCtrl">
<script>{{warning}}</script>
</div>
<script>
var app = angular.module('myApp', []);
app.controller('personCtrl', function($scope) {
$scope.warning = "alert('This is a warning');";
});
</script>
</body>
</html>
var myApp = angular.module('myApp',[]);
function MyCtrl($scope) {
$scope.name = 'Superhero';
if ($scope.name==='Superhero') {
alert("hello");
}
}
var myApp = angular.module('myApp',[]);
function MyCtrl($scope) {
$scope.name = 'Superhero';
$scope.$watch('name', function(newVal, oldVal) {
alert("hello");
})
}
如果您希望在视图中通过更改模型有条件地显示警报,请尝试以下操作:
<!DOCTYPE html>
<html>
<head>
<script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.3.14/angular.min.js"></script>
</head>
<body>
<div ng-app="myApp" ng-controller="personCtrl">
<script>{{warning}}</script>
</div>
<script>
var app = angular.module('myApp', []);
app.controller('personCtrl', function($scope) {
$scope.warning = "alert('This is a warning');";
});
</script>
</body>
</html>
var myApp = angular.module('myApp',[]);
function MyCtrl($scope) {
$scope.name = 'Superhero';
if ($scope.name==='Superhero') {
alert("hello");
}
}
var myApp = angular.module('myApp',[]);
function MyCtrl($scope) {
$scope.name = 'Superhero';
$scope.$watch('name', function(newVal, oldVal) {
alert("hello");
})
}
现在,每次更改视图中的“名称”模型时,都会弹出警报
有关手表的更多信息,请参阅。您只需发出警告即可。。在您的控制器中作为一个普通的代码行,您不需要使用范围,只需将警报放在您想要显示它的地方,就像您在javascript中使用的方式一样。