$http.get in AngularJS fails - javascript

Hey I have problem with getting data from webpage to my own page.
I'm using Angularjs and try to take data from http://irys.wi.pb.edu.pl/bibWS/books I look my page in chrome and get:
ReferenceError: $http is not defined
My page:
<!DOCTYPE html>
<html ng-app>
<head>
<meta charset="utf-8" />
<title>AngularJS</title>
</head>
<body>
<script src="angular.min.js"></script>
<script>
function LibraryController($scope) {
var urlBase = 'http://irys.wi.pb.edu.pl/bibWS/books';
$scope.books = $http.get(urlBase);
}
</script>
<div ng-controller="LibraryController">
Title: <input type="text" ng-model="searchText" /><br />
<ul>
<li ng-repeat="book in books">
<strong>{{book.title}}</strong> -
<em>{{book.author_id}}</em></li>
</ul>
</div>
</body>
</html>

You have to inject $http service into your controller
function LibraryController($scope, $http)

You should add $http to your controller:
function LibraryController($scope, $http)
...

Related

How to fix an Angular app giving out an empty page in Plunker?

Just defined an app 'Demo' in AngularJS
'use strict';
var app = angular.module('demo', []);
app.controller('DemoCtrl', function($scope) {
$scope.obj={language_selected : {'name':'Choose a language'}};
$scope.language_list = [{'name': 'english', 'url': 'https://raw.githubusercontent.com/stevenrskelton/flag-icon/master/png/16/country-4x3/gb.png'},{'name': 'italian', 'url': 'https://raw.githubusercontent.com/stevenrskelton/flag-icon/master/png/16/country-4x3/it.png'}];
});
Now defined an HTML page correspondingly
<!DOCTYPE html>
<html lang="en" ng-app="demo">
<head>
<meta charset="utf-8">
<title>AngularJS ui-select</title>
<script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.2.18/angular.js"></script>
<script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.2.18/angular-sanitize.js"></script>
<link rel="stylesheet" href="select.css">
</head>
<body ng-controller="DemoCtrl">
<div class="select_list" ng-class='{active:active}' ng-click="active=!active">
<span ng-style="{'background-image':'url('+obj.language_selected.url+')'}">{{obj.language_selected.name}}</span>
<ul class="options">
<li class="select_list_option" ng-repeat="language in language_list" ng-click="obj.language_selected=language" ng-style="{'background-image':'url('+language.url+')'}">{{language.name}}</li>
</ul>
</div>
</body>
</html>
EDIT: Checked the appName -> 'demo' & ng-app is demo & controller is DemoCtrl & ng-controller is DemoCtrl. It is defined appropriately.
The plunker now gives out an empty page.
Am I missing anything here ? Plunker link here: http://next.plnkr.co/edit/nXsUgM7nEsfg7jXh
You forgot to load you js code, please add
<script src="demo.js"></script>
Here is plunker http://next.plnkr.co/edit/g4yKhngP1TyJ8jLr
You are missing to add the reference to demo.js in the index.html. Add the references as follows.
<script src="demo.js"></script>
PLUNKER DEMO
Seems like you forgot to load your js code
<script src="demo.js"></script>
demo

How to write following javascript in Angular2?

I have no idea about Angular.js. But want I want to do is
this
<head>
<script type="text/javascript">
function showAndroidToast(toast) {
Android.showToast(toast);
}
</script>
</head>
and this
<body>
<input type="button" value="Say hello" onClick="showAndroidToast('Hello Android!')" />
</body>
any idea?
Here is angular js code.
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular.min.js"></script>
<script>
angular.module('myApp', []).controller('namesCtrl', function($scope) {
$scope.showAndroidToast = function(toast) {
//write your code here to perform some action on calling this function
//Android.showToast(toast);
alert(toast);
console.log(toast);
}
})
</script>
</head>
<body ng-app="myApp" ng-controller="namesCtrl">
<input type="button" value="Say hello" ng-click="showAndroidToast('Hello Android!')" />
</body>
</html>
You should go through docs first of angular :
Its so simple as below :
var app = angular.module('plunker', []);
app.controller('MainCtrl', function($scope) {
$scope.showAndroidToast = function(toast) {
Android.showToast(toast); // Android should be inject as an dependency otherwise it would be undefined.
}
});
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<body ng-app="plunker" ng-controller="MainCtrl">
<input type="button" value="Say hello" ng-click="showAndroidToast('Hello Android!')" />
</body>
I managed to create a simple example for you. I was missing the Android class, so I tested it using the alert() function.
AngularJS 2
Plunkr Demo
Guidelines
AngularJS's Controller As and the vm Variable
File-closure and Strict mode
Angular Components
ngApp
ngController
ngClick
(function() {
"use strict";
function exampleController() {
var vm = this;
vm.showAndroidToast = showAndroidToast;
function showAndroidToast(message) {
alert(message); // replace this with your toast message
}
}
var app = angular.module("exampleApp", []);
app.controller("exampleController", exampleController);
})();
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
</head>
<body ng-app="exampleApp" ng-controller="exampleController as vm">
<input type="button" value="Say hello" ng-click="vm.showAndroidToast('Hello Android!')" />
</body>
</html>

AngularJS tutorial not binding data

I have a very basic example that isn't working: I have two aspects, the index.html and the main.js. They are in the same folder:
<!DOCTYPE html>
<html>
<head>
<title> AngularJS Tutorials </title>
<link rel="stylesheet" href="css/foundation.min.css">
<script src="main.js"></script>
</head>
<body>
<div ng-app="myApp">
<div ng-controller="FirstCtrl">
<h1>{{data.message}}</h1>
</div>
</div>
<script type="text/javascript" src="js/angular.min.js"></script>
</body>
</html>
main.js
function FirstCtrl($scope) {
$scope.data = {message: "Hello"};
}
my page shows this:
{{data.message}}
You need to add the controller to the angular module. you can use the controller function to add the js function for your controller.
var FirstCtrl = function FirstCtrl($scope) {
$scope.data = {message: "Hello2"};
};
angular.module("myApp",[]).controller("FirstCtrl",FirstCtrl);
If you already had the angular module defined somewhere else in the page, Use this version.
angular.module("myApp").controller("FirstCtrl",FirstCtrl);
Here is a working sample http://jsbin.com/tiroteharu/edit?html,js,console,output
<script src="~/Scripts/angular/angular.js"></script>
<script>
var myApp = angular.module('myApp', []);
myApp.controller('FirstCtrl', ['$scope', function ($scope) {
$scope.data = { message: "Hello" };
}]);
</script>
<div ng-app="myApp">
<div ng-controller="FirstCtrl">
<h1>{{data.message}}</h1>
</div>
</div>
More help read: https://docs.angularjs.org/guide/controller

Angular JS not working in plunker

I couldn't get my angular code to run in plunker. I have attached the details. Could any of you help me out? Basically it's a problem with ngcontroller I guess but I am not sure.
<!DOCTYPE html>
<html ng-app>
<head>
<script data-require="angular.js#*" data-semver="1.3.15" src="https://code.angularjs.org/1.3.15/angular.js"></script>
<link rel="stylesheet" href="style.css" />
<script src="script.js"></script>
</head>
<body ng-controller="MainController">
{{ 5 / 2 }}<br>
{{message}}
</body>
</html>
Contents of javascript script.js file
var MainController = function($scope){
$scope.message = "Welcome!";
};
Plunk
http://plnkr.co/edit/mzgdELALCP7DN2ikJHsC?p=preview
In version 1.3.*, you cannot longer declare a global controller function.
Instead define a module, and use your controller function:
var SidController = function($scope){
$scope.message = "WElcome.";
};
SidController.$inject = ['$scope'];
angular.module('app', []).controller('SidController', SidController);
In your html
<html ng-app="app">
See this plunker.
I had the same issue.. Well done on starting a tutorial! Simply replace the script in your index.html with
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.2/angular.min.js"></script>
I suppose the library Plunker currently has is outdated or something.
Working Plunkr (with a different AngularJS version. #user3906922 has a better answer, where your version stays the same).
Use this for HTML for instance:
<!doctype html>
<html ng-app>
<head>
<script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.0.5/angular.min.js"></script>
<script src="script.js"></script>
</head>
<body>
<div ng-controller="SidController">
<h1>Hello Plunker!</h1>
{{ 5 / 2 }}<br>
{{message}}
</div>
</body>
</html>
Check this plunkr
You need to define your module and then register the controller
http://plnkr.co/edit/9zAV5nSWH05FYscEWYZ5?p=preview
angular.module( 'demoApp', []);
angular.module( 'demoApp' )
.controller( 'SidController', function($scope){
$scope.message = "WElcome.";
});
You should create your module.
angular.module('app', []).controller("SidController", function($scope) {
$scope.message = "WElcome.";
});
Then in your html element, set your attribute like this:
ng-app="app"

Angualrjs factor is not working

I have this js
var app = angular.module('MyApp', []);
app.factory('Data', function () {
return {message: "I am data from a service"}
})
app.controller('FirstCtrl', function ($scope, Data) {
$scope.data = Data;
})
app.controller('SecondCtrl', function ($scope) {
})
and this is my html
<!DOCTYPE html>
<html ng-app="MyApp">
<head>
<title>index</title>
<script src="Scripts/angular.js"></script>
<script src="Scripts/index.js"></script>
</head>
<body>
<div ng-controller="FirstCtrl" >
<input type="text" ng-model="message"/>
<h2>{{message}}</h2>
</div>
<div ng-controller="SecondCtrl" >
<input type="text" ng-model="message"/>
<h2>{{message}}</h2>
</div>
</body>
</html>
when I run the application, the message I am data from a service is not loaded into the h2 of the first controller although I made the factory and passed it to the controller
You are assigning $scope.data = Data. Then you should access it in the view
<div ng-controller="FirstCtrl" >
<input type="text" ng-model="data.message"/>
<h2>{{data.message}}</h2>
</div>

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