AngularJS kontrollerlari
AngularJS kontrollerlari AngularJS ilovalarining ma’lumotlarini boshqaradi.
AngularJS kontrollerlari — oddiy JavaScript obyektlari.
AngularJS kontrollerlari
AngularJS ilovalari kontrollerlar tomonidan boshqariladi.
ng-controller direktivasi ilova kontrollerini belgilaydi.
Kontroller — standart JavaScript obyekt konstruktori orqali yaratilgan JavaScript obyekti.
AngularJS misoli
<div ng-app="myApp" ng-controller="myCtrl">
First Name: <input type="text" ng-model="firstName"><br>
Last Name: <input type="text" ng-model="lastName"><br>
<br>
Full Name: {{firstName + " " + lastName}}
</div>
<script>
var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope) {
$scope.firstName = "John";
$scope.lastName = "Doe";
});
</script>
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Ilova izohi:
AngularJS ilovasi ng-app="myApp" orqali belgilanadi.
Ilova <div> ichida ishlaydi.
ng-controller="myCtrl" atributi — AngularJS direktivasi.
U kontrollerni belgilaydi.
myCtrl funksiyasi — JavaScript funksiyasi.
AngularJS kontrollerni $scope obyekti bilan chaqiradi.
AngularJS’da $scope — ilova obyekti (ilova o‘zgaruvchilari va funksiyalarining egasi).
Kontroller scope’da ikkita xususiyat (o‘zgaruvchi) yaratadi (firstName va lastName).
ng-model direktivalari kiritish maydonlarini kontroller xususiyatlariga (firstName va lastName) bog‘laydi.
Kontroller metodlari
Yuqoridagi misolda ikkita xususiyatga ega kontroller obyekti ko‘rsatildi: lastName va firstName.
Kontrollerda metodlar (funksiya ko‘rinishidagi o‘zgaruvchilar) ham bo‘lishi mumkin:
AngularJS misoli
<div ng-app="myApp" ng-controller="personCtrl">
First Name: <input type="text" ng-model="firstName"><br>
Last Name: <input type="text" ng-model="lastName"><br>
<br>
Full Name: {{fullName()}}
</div>
<script>
var app = angular.module('myApp', []);
app.controller('personCtrl', function($scope) {
$scope.firstName = "John";
$scope.lastName = "Doe";
$scope.fullName = function() {
return $scope.firstName + " " + $scope.lastName;
};
});
</script>
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Tashqi fayllardagi kontrollerlar
Kattaroq ilovalarda kontrollerlarni tashqi fayllarda saqlash odatiy holdir.
Shunchaki <script> teglari orasidagi kodni personController.js nomli tashqi faylga nusxalang:
AngularJS misoli
<div ng-app="myApp" ng-controller="personCtrl">
First Name: <input type="text" ng-model="firstName"><br>
Last Name: <input type="text" ng-model="lastName"><br>
<br>
Full Name: {{fullName()}}
</div>
<script src="personController.js"></script>
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Yana bir misol
Keyingi misol uchun yangi kontroller faylini yaratamiz:
angular.module('myApp', []).controller('namesCtrl', function($scope) {
$scope.names = [
{name:'Jani',country:'Norway'},
{name:'Hege',country:'Sweden'},
{name:'Kai',country:'Denmark'}
];
});
Faylni namesController.js nomi bilan saqlang:
So‘ngra kontroller faylidan ilovada foydalaning:
AngularJS misoli
<div ng-app="myApp" ng-controller="namesCtrl">
<ul>
<li ng-repeat="x in names">
{{ x.name + ', ' + x.country }}
</li>
</ul>
</div>
<script src="namesController.js"></script>
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