如何检查 angularJs 工厂中的文本框是否为空?
how to check textbox isEmpty in angularJs Factory?
如何检查 angularjs Factory 中的文本框是否为空?
我的 HTML 来源是
<!DOCTYPE html>
<html>
<script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular.min.js"></script>
<body>
<div ng-app="myApp" ng-controller="customersCtrl">
<input type="text" ng-model="test">
</div>
</body>
</html>
在您的控制器中,您可以随时查看模型值。喜欢
var app = angular.module('myApp', []);
app.controller('customersCtrl', function($scope) {
if($scope.test == ""){
// textbox is empty, do your stuff here
}
});
var customersCtrl = function($scope,Validate){
var isEmpty = Validate.isEmpty($scope.test);
$scope.Validation = Validate;
if(isEmpty){
console.info('Textbox is empty');
}else{
console.info('Textbox is not empty');
}
};
angular.module('myApp').controller('customersCtrl', customersCtrl);
var Validate = function() {
var factory = {};
factory.isEmpty = function(val){
var result = false;
if(!val){
result = true;
}
return result;
};
return factory;
};
angular.module('myApp').factory('Validate', Validate);
这是根据您的要求Plunker。
angular.module('myApp', [])
.controller('customersCtrl', function($scope){
$scope.changed = function(){
if(!$scope.test){
$scope.msg = 'empty';
} else {
$scope.msg = 'not empty';
}
}
});
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-app="myApp" ng-controller="customersCtrl">
<input type="text" ng-model="test" ng-change="changed()"/>
{{ test }} | {{ msg }}
</div>
额外技巧!
您可以在 angular 表达式上查看。请参阅下面的示例!
var app = angular.module('myApp', []);
app.controller('customersCtrl', function($scope) {
$scope.test = "";
});
<!DOCTYPE html>
<html>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<body>
<div ng-app="myApp" ng-controller="customersCtrl">
<input type="text" ng-model="test">
<span ng-show="test.length == 0">
is empty </span>
</div>
</body>
</html>
希望!
如何检查 angularjs Factory 中的文本框是否为空?
我的 HTML 来源是
<!DOCTYPE html>
<html>
<script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular.min.js"></script>
<body>
<div ng-app="myApp" ng-controller="customersCtrl">
<input type="text" ng-model="test">
</div>
</body>
</html>
在您的控制器中,您可以随时查看模型值。喜欢
var app = angular.module('myApp', []);
app.controller('customersCtrl', function($scope) {
if($scope.test == ""){
// textbox is empty, do your stuff here
}
});
var customersCtrl = function($scope,Validate){
var isEmpty = Validate.isEmpty($scope.test);
$scope.Validation = Validate;
if(isEmpty){
console.info('Textbox is empty');
}else{
console.info('Textbox is not empty');
}
};
angular.module('myApp').controller('customersCtrl', customersCtrl);
var Validate = function() {
var factory = {};
factory.isEmpty = function(val){
var result = false;
if(!val){
result = true;
}
return result;
};
return factory;
};
angular.module('myApp').factory('Validate', Validate);
这是根据您的要求Plunker。
angular.module('myApp', [])
.controller('customersCtrl', function($scope){
$scope.changed = function(){
if(!$scope.test){
$scope.msg = 'empty';
} else {
$scope.msg = 'not empty';
}
}
});
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-app="myApp" ng-controller="customersCtrl">
<input type="text" ng-model="test" ng-change="changed()"/>
{{ test }} | {{ msg }}
</div>
额外技巧!
您可以在 angular 表达式上查看。请参阅下面的示例!
var app = angular.module('myApp', []);
app.controller('customersCtrl', function($scope) {
$scope.test = "";
});
<!DOCTYPE html>
<html>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<body>
<div ng-app="myApp" ng-controller="customersCtrl">
<input type="text" ng-model="test">
<span ng-show="test.length == 0">
is empty </span>
</div>
</body>
</html>
希望!