Assign JavaScript Variable to AngularJS Scope Object and Display it

Assign JavaScript Variable to AngularJS Scope Object and Display it - javascript

I'm new to AngularJS. I was trying to find the center point on the page with JavaScript then bind it to the $scope object. I'm not entirely sure if I bound the JavaScript variables correctly. After I did that, I was trying to preview the values in my HTML page. When I ran the code it threw an error message.
<script type="text/javascript">
var Page_Center_Width = $(window).width() / 2;
var Page_Center_Height = $(window).height() / 2;
</script>
<script>
var app = angular.module('myApp', []);
app.controller('mainCtrl', function ($scope, $interval, $window) {
$scope.Window_Width = $window.Page_Center_Width;
$scope.Window_Height = $window.Page_Center_Height;
});
</script>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.4/angular.min.js"></script>
<div ng-app="myApp" ng-controller="mainCtrl" >
<div >Window-Width: {{Window_Width}}</div>
<div >Window-Height: {{Window_Height}}</div>
</div>

var Page_Center_Width = $(window).width() / 2;
var Page_Center_Height = $(window).height() / 2;
var app = angular.module('myApp', []);
app.controller('mainCtrl', function ($scope, $interval, $window) {
$scope.Window_Width = $window.Page_Center_Width;
$scope.Window_Height = $window.Page_Center_Height;
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.4/angular.min.js"></script>
<div ng-app="myApp" ng-controller="mainCtrl">
<div>Window-Width: {{Window_Width}}</div>
<div>Window-Height: {{Window_Height}}</div>
</div>

You have different problem at your snippet. You put script tag on javascript section.
var app = angular.module('myApp', []);
app.controller('mainCtrl', function($scope, $interval, $window) {
$scope.Window_Width = $window.Page_Center_Width;
$scope.Window_Height = $window.Page_Center_Height;
});
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.4/angular.min.js"></script>
<div ng-app="myApp" ng-controller="mainCtrl">
<div>Window-Width: {{Window_Width}}</div>
<div>Window-Height: {{Window_Height}}</div>
</div>
<script type="text/javascript">
var Page_Center_Width = 3434;
var Page_Center_Height = 1222;
</script>

Related

No Inheritance is occuring in the angularJS code

This is an AngularJS inheritance code where the inheritance is applied in the functions but there is no output coming for this code.
custDetails and empPaycheck are the two functions where inheritance is applied but the code has some error which I am not been able to find.
<html lang="">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Controller Inheritance</title>
<script src="angulaar.min.js"></script>
<script>
var app = angular.module("sample",
[]).run(["$rootScope",function($rootScope){
$rootScope.taxPe`enter code here`rcent = 30;
}]);
app.controller("custDetails", ["$scope",function($scope) {
$scope.Name = "Dipanshu";
$scope.Sal = 45000;
$scope.Dept = "Testing";
}]);
app.controller("empPayCheck", ["$scope", "$rootScope",
function($scope, $rootScope) {
$scope.getTaxes = function() {
return $scope.Sal * $rootScope.taxPercent / 100;
};
$scope.getNet = function() {
return $scope.Sal - $scope.getTaxes();
};
}]);
</script>
</head>
<body ng-app="sample">
<div ng-controller="custDetails">
Employee Details of {{Name}}
<div ng-controller="custDetails">
{{Name}} earns {{Sal}} rs and is in <strong>{{Dept}}</strong>
Department.
<div controller="empPayCheck">
Tax: {{getTaxes()}}
<br> Net Amount: {{getNet()}}
</div>
</div>
</div>
</body>
</html>

You should use $scope.$parent to access parent $scope variables in a child controller.
Also in your HTML code there's a typo where controller should be ng-controller.
Look at the following working example.
var app = angular.module("sample", []).run(["$rootScope", function($rootScope) {
$rootScope.taxPercent = 30;
}]);
app.controller("custDetails", ["$scope", function($scope) {
$scope.Name = "Dipanshu";
$scope.Sal = 45000;
$scope.Dept = "Testing";
}]);
app.controller("empPayCheck", ["$scope", "$rootScope",
function($scope, $rootScope) {
$scope.getTaxes = function() {
return $scope.$parent.Sal * $rootScope.taxPercent / 100;
};
$scope.getNet = function() {
return $scope.$parent.Sal - $scope.getTaxes();
};
}
]);
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<body ng-app="sample">
<div ng-controller="custDetails">
Employee Details of {{Name}}
<div>
{{Name}} earns {{Sal}} rs and is in <strong>{{Dept}}</strong> Department.
<div ng-controller="empPayCheck">
Tax: {{getTaxes()}}
<br> Net Amount: {{getNet()}}
</div>
</div>
</div>
</body>

There is error in your module run block near $rootScope.taxPe;
You are using controller attribute instead of ng-controller.
Here is a working code snippet:
var app = angular.module("sample", []).run(["$rootScope", function($rootScope) {
$rootScope.taxPercent = 30;
}]);
app.controller("custDetails", ["$scope", function($scope) {
$scope.Name = "Dipanshu";
$scope.Sal = 45000;
$scope.Dept = "Testing";
}]);
app.controller("empPayCheck", ["$scope", "$rootScope",
function($scope, $rootScope) {
$scope.getTaxes = function() {
return $scope.Sal * $rootScope.taxPercent / 100;
};
$scope.getNet = function() {
return $scope.Sal - $scope.getTaxes();
};
}
]);
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<body ng-app="sample">
<div ng-controller="custDetails">
Employee Details of {{Name}}
<div ng-controller="custDetails">
{{Name}} earns {{Sal}} rs and is in <strong>{{Dept}}</strong> Department.
<div ng-controller="empPayCheck">
Tax: {{getTaxes()}}
<br> Net Amount: {{getNet()}}
</div>
</div>
</div>
</body>
P.S.: Personally I would not recommend using $rootScope and scope inheritance, you can use services to share data between controllers. Also would suggest you looking into component API that comes in v1.5+.

Angular - how to concat var name

I just started to learn Angular, and I tried to make concat var name so I can control it dynamically.
This is what I tried -
<div ng-app="myApp" ng-controller="myCtrl">
<button ng-click="myFunc(1)">Click Me!</button>
<div ng-show="showMe1">
<h1>Menu:</h1>
<div>Pizza</div>
<div>Pasta</div>
<div>Pesce</div>
</div>
</div>
<script>
var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope) {
$scope.showMe1 = false;
$scope.myFunc = function(x) {
var nametocng = 'showMe'+x;
//var nametocng = $parse("showMe"+x); // - I tried this also
$scope.nametocng = !$scope.nametocng;
}
});
</script>

use $scope[variable] for dynamic.
From your comment: In the end, I want to make multiple Toggles, but I want one function for all of them. and then, every button will handle one toggle
You can use ng-repeat for button to handle different menu's
<!DOCTYPE html>
<html>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular.min.js"></script>
<body>
<div ng-app="myApp" ng-controller="myCtrl">
<button ng-repeat="button in array" ng-click="myFunc(button)">Click Me!</button>
<div ng-show="showMe1">
<h1>Menu:</h1>
<div>Pizza1</div>
<div>Pasta1</div>
<div>Pesce1</div>
</div>
<div ng-show="showMe2">
<h1>Menu:</h1>
<div>Pizza2</div>
<div>Pasta2</div>
<div>Pesce2</div>
</div>
{{nametocng}}
</div>
<script>
var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope) {
$scope.array = [1,2];
$scope.firstName = "John";
$scope.lastName = "Doe";
$scope.myFunc = function(x) {
angular.forEach($scope.array, function(value, key){
$scope['showMe'+value] = false
});
var nametocng = 'showMe'+x;
//var nametocng = $parse("showMe"+x); // - I tried this also
$scope[nametocng] = !$scope[nametocng];
}
});
</script>
</body>
</html>
Please run the above snippet
Here is a DEMO

If you have a dynamic variable name, you need to access via [] syntax. It will evaluate the variable's value and use that value as a property name.
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-app="myApp" ng-controller="myCtrl">
<button ng-click="myFunc(1)">Click Me!</button>
<div ng-show="showMe1">
<h1>Menu:</h1>
<div>Pizza</div>
<div>Pasta</div>
<div>Pesce</div>
</div>
</div>
<script>
var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope) {
$scope.showMe1 = false;
$scope.myFunc = function(x) {
var nametocng = 'showMe'+x;
//var nametocng = $parse("showMe"+x); // - I tried this also
$scope[nametocng] = !$scope[nametocng];
}
});
</script>

Try using this
you have keep condition on click and check against concat string
Js code
var app = angular.module('myApp', []);
app.controller('ctrl', function($scope) {
$scope.showMe1 = false;
$scope.nametocng = 'showMe1';
$scope.myFunc = function(x) {
var nametocng = 'showMe' + x;
$scope.showMe1 = $scope.nametocng === nametocng; // result will bool
}
});
HTML
<div ng-app='myApp'>
<div ng-controller='ctrl'>
<button ng-click="myFunc(1)">Click Me!</button>
{{showMe1}} {{nametocng}}
<div ng-show="showMe1">
<h1>Menu:</h1>
<div>Pizza</div>
<div>Pasta</div>
<div>Pesce</div>
</div>
</div>
</div>
Jsfiddle link

How to get time with Milliseconds in AngularJS

I'm able to get seconds in Time using AngularJS and its "Interval" option but i was thing about adding milliseconds to the same with 2 digits. Below is the code. can anyone tell me on how to add milliseconds to it.
AngularJs Code
var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope, $interval) {
$scope.theTime = new Date().toLocaleTimeString();
$interval(function () {
$scope.theTime = new Date().toLocaleTimeString();
}, 1000);
});
HTML
<div class="col-lg-2" ng-app="myApp" ng-controller="myCtrl">
<h3 style="color: blue;font-family: cursive;"><b>{{theTime}}</b></h3>
</div>
Update - On how i found the solution.
I just did the following changes. Thanks to Pranjal
AngularJS Code
var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope, $interval) {
$scope.theTime = new Date();
$interval(function () {
$scope.theTime = new Date();
}, 1);
});
HTML
<div class="col-lg-2" ng-app="myApp" ng-controller="myCtrl">
<h3 style="color: blue;font-family: cursive;font-size: 20;margin-left: 20;"><b>{{theTime | date:'HH:mm:ss:sss a'}}</b></h3>
</div>

<body>
<script type="text/javascript">
var app = angular.module('MyApp', [])
app.controller('MyController', function ($scope) {
$scope.CurrentDate = new Date();
});
</script>
<div ng-app="MyApp" ng-controller="MyController">
<span>{{CurrentDate | date:'HH:mm:ss:sss'}}</span>
</div>
</body>

ng-view not show with Route (angularjs)

I'm doing the tutorial about angularjs. Everything is fine until working with route.
I 'm search about this problem before, but it not working for me.
I'm doing exactly the code which author type but it's not working.
ng-view put in index.html
<html ng-app="githubViewer">
<head>
<title>Demo</title>
<script type="text/javascript" src="js/angular.min.js"></script>
<script type="text/javascript" src="js/angular-route.js"></script>
<script type="text/javascript" src="app.js"></script>
<script type="text/javascript" src="MainController.js"></script>
<script type="text/javascript" src="github.js"></script>
</head>
<body>
<h1>Github Viewer</h1>
<div ng-view=""></div>
</body>
app.js
(function() {
var app = angular.module("githubViewer", ["ngRoute"]);
app.config(function($routeProvider) {
$routeProvider
.when("/main", {
templateUrl: "main.html",
controller: "MainController"
})
.otherwise({redirectTo:"/main"});
});})();
MainController.js
(function() {
var app = angular.module("githubViewer");
var MainController = function(
$scope, $interval, $location) {
var decrementCountdown = function() {
$scope.countdown -= 1;
if ($scope.countdown < 1) {
$scope.search($scope.username);
}
};
var countdownInterval = null;
var startCountdown = function() {
countdownInterval = $interval(decrementCountdown, 1000, 5, $scope.countdown);
};
$scope.search = function(username) {
if (countdownInterval) {
$interval.cancel(countdownInterval);
$scope.countdown = null;
}
};
$scope.username = "angular";
$scope.countdown = 5;
startCountdown();
};
app.controller("MainController", MainController);})();
main.html
<div>
{{countdown}}
{{username}}
<form name="searchUser" ng-submit="search(username)">
<input type="search" required placeholder="usẻname to ind" ng-model="username" />
<input type="submit" value="Search" ng-click="search(username)">
</form>
github.js
(function() {
var github = function($http) {
var getUser = function(username){
return $http.get("https://api.github.com/users/" + username)
.then(function(response){
return response.data;
});
};
var getRepos = function(user){
return $http.get(user.repos_url)
.then(function(response){
return response.data;
});
};
return{
getUser : getUser,
getRepos: getRepos
};
};
var module = angular.module("githubViewer");
module.factory("github", github);})();

You have an error in your code:
var MainController = function($scope, $interval, , $location) {
// unnecessary comma here ----^
Remove comma (or insert missing parameter) and your app should start working.
In general I recommend to keep developer console open all the time during coding.

How can I use AngularJS controller-specific scope values in document head?

I am trying to use my scope values in my head title tag. This is external to the body element that has my controller. IS there a way to do this?
Here is my HTML:
<!DOCTYPE html>
<html ng-app="soCLean">
<head>
<title>{{locale}} {{type}} {{service}}</title>
</head>
<body ng-controller="soCleanLandingPage">
<script type="text/javascript" src="//ajax.googleapis.com/ajax/libs/angularjs/1.2.12/angular.min.js"></script>
<script>
var soClean = angular.module('soClean', []);
soClean.controller('soCleanLandingPage', ['$scope', function ($scope) {
$scope.locale = 'vancouver';
$scope.type = 'residential';
$scope.service = 'pressure washing';
$scope.serviceSingle = 'pressure wash';
}]);
</script>
</body>
</html>
Thanks for your help.

Just move your ng-controller to the html element.
http://plnkr.co/edit/xImv48BvoW2Y9Ibb9JTq?p=preview
(You can see the values in head in the debugger)
<!DOCTYPE html>
<html ng-app="soClean" ng-controller="soCleanLandingPage">
<head>
<title>{{locale}} {{type}} {{service}}</title>
</head>
<body >
<div>
<p>{{locale}}</p>
<p>{{type}}</p>
<p>{{service}}</p>
<p>{{serviceSingle}}</p>
</div>
<script type="text/javascript" src="//ajax.googleapis.com/ajax/libs/angularjs/1.2.12/angular.min.js"></script>
<script>
var soClean = angular.module('soClean', []);
soClean.controller('soCleanLandingPage', ['$scope', function ($scope) {
$scope.locale = 'vancouver';
$scope.type = 'residential';
$scope.service = 'pressure washing';
$scope.serviceSingle = 'pressure wash';
}]);
</script>
</body>
</html>

You can use the $rootScope:
app.run(function($rootScope){
$rootScope.locale = "en";
$rootScope.type = "something";
$rootScope.service = "another";
});
You can also use a fancy directive:
app.directive('title', function(){
return {
restrict: 'E',
scope:{},
template: "{{locale}} {{type}} {{service}}",
link: function(scope){
scope.locale = "en";
scope.type = "something";
scope.service = "another";
}
}
});
Check this plunker: http://plnkr.co/edit/JRblEkKaOCLNC2O7r9s4?p=preview

Develop Reference

JavaScript is the programming language of the Web.

Assign JavaScript Variable to AngularJS Scope Object and Display it - javascript

Related

No Inheritance is occuring in the angularJS code

Angular - how to concat var name

How to get time with Milliseconds in AngularJS

ng-view not show with Route (angularjs)

How can I use AngularJS controller-specific scope values in document head?

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