AngularJs Tutorials
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Important News
AngularJs HTTP
$http is an AngularJS service for reading data from remote servers. The AngularJS $http service makes a request to the server, and returns a response
<!DOCTYPE html>
<html>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.9/angular.min.js"></script>
<body>
<div ng-app="appName" ng-controller="myCtrl">
<p>Today's welcome message is:</p>
<h1>{{myWelcome}}</h1>
</div>
<p>The $http service requests a page on the server, and the response is set as the value of the "myWelcome" variable.</p>
<script>
var app = angular.module('appName', []);
app.controller('myCtrl', function($scope, $http) {
$http.get("welcome.php")
.then(function(response) {
$scope.myWelcome = response.data;
});
});
</script>
</body>
</html>
File name : welcome.php
Welcome Mahtab Habib
Methods
.get()
.delete()
.head()
.jsonp()
.patch()
.post()
.put()
GET
<!DOCTYPE html>
<html>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.9/angular.min.js"></script>
<body>
<div ng-app="myApp" ng-controller="myCtrl">
<p>Today's welcome message is:</p>
<h1>{{myWelcome}}</h1>
</div>
<p>The $http service requests a page on the server, and the response is set as the value of the "myWelcome" variable.</p>
<script>
var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope, $http) {
$http({
method : "GET",
url : "welcome.htm"
}).then(function mySuccess(response) {
$scope.myWelcome = response.data;
}, function myError(response) {
$scope.myWelcome = response.statusText;
});
});
</script>
</body>
</html>
Properties
The response from the server is an object with these properties:
.config the object used to generate the request.
.data a string, or an object, carrying the response from the server.
.headers a function to use to get header information.
.status a number defining the HTTP status.
.statusText a string defining the HTTP status.
Example
<!DOCTYPE html>
<html>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.9/angular.min.js"></script>
<body>
<div ng-app="myApp" ng-controller="myCtrl">
<p>Data : {{content}}</p>
<p>Status : {{statuscode}}</p>
<p>StatusText : {{statustext}}</p>
</div>
<p>The response object has many properties. This example demonstrate the value of the data, status, and statusText properties.</p>
<script>
var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope, $http) {
$http.get("welcome.htm")
.then(function(response) {
$scope.content = response.data;
$scope.statuscode = response.status;
$scope.statustext = response.statusText;
});
});
</script>
</body>
</html>
To handle errors, add one more functions to the .then method:
<!DOCTYPE html>
<html>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.9/angular.min.js"></script>
<body>
<div ng-app="myApp" ng-controller="myCtrl">
<h1>{{content}}</h1>
</div>
<p>The $http service executes different functions on success and failure.</p>
<script>
var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope, $http) {
$http.get("wrongfilename.htm")
.then(function(response) {
$scope.content = response.data;
}, function(response) {
$scope.content = "Something went wrong";
});
});
</script>
</body>
</html>
JSON
<!DOCTYPE html>
<html>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.9/angular.min.js"></script>
<body>
<div ng-app="myApp" ng-controller="customersCtrl">
<ul>
<li ng-repeat="x in myData">
{{ x.Name + ', ' + x.Country }}
</li>
</ul>
</div>
<script>
var app = angular.module('myApp', []);
app.controller('customersCtrl', function($scope, $http) {
$http.get("customers.php").then(function (response) {
$scope.myData = response.data.records;
});
});
</script>
</body>
</html>
The application defines the customersCtrl controller, with a $scope and $http object.
$http is an XMLHttpRequest object for requesting external data.
$http.get() reads JSON data from https://www.w3schools.com/angular/customers.php.
On success, the controller creates a property, myData, in the scope, with JSON data from the server.