Seeking guidance on AngularJS as a beginner. I am curious about the distinction between the following two code examples:
1. Defining a controller using 'this':
var app = angular.module('greeting', []);
app.controller('HelloCtrl', function() {
this.name = 'Hello World';
});
2. Defining a controller using $scope:
var app = angular.module('greeting', []);
app.controller('HelloCtrl', function($scope) {
$scope.name = 'Hello World';
});
Appreciate any insights or clarification.
Utilizing the two methods differently is crucial in the view structure. The this syntax works hand in hand with the controller as syntax, effectively converting your controller into your view model.
A concrete example using controller as
Within the Controller
this.text = "An example of Controller as"
In the View
<div ng-controller="myCtrl as controllerViewModel">
{{controllerViewModel.text}}
</div>
Equivalent using Scope
Within the Controller
$scope.text = "An example utilizing Scope";
In the View
<div ng-controller="myCtrl">{{text}}</div>
Explore these informative links related to the topic
The term 'this' in this context is specifically pointing to the instance of the HelloCtrl in your code. On the other hand, $scope is a completely separate object with its own state that is handled by Angular.
I'm dealing with a situation where I have 5 HTML buttons, each with a click event listener attached to it in the form of an anonymous function. For example: $('#button1').click(function(){ //some code }); At a certain poin ...
angular-chart.js provides an example of a bar chart, which can be found here. Using this as a foundation, I made some modifications to the js and markup code like so. HTML <body ng-app="app"> <div class="row"> <div class="col-m ...
Developing with Angular 1.5 and Material Design, I have successfully created a component that serves as a panel for creating a foobar. This panel includes a "cancel" button which triggers a callback function when clicked. The challenge arises from the fact ...
My goal is to have a function execute as soon as a person opens my page, without requiring any interaction. The function should trigger on page load, rather than waiting for a click event. Additionally, I want the function to repeat every 90 seconds. I&apo ...
When trying to send a request to the server and check the response, I am not seeing any results. The code for sending the request is below: SendVerificationInfo(item: SendVerificationModel): Observable < any > { return this.httpClient.post < any ...
I encountered the error message in my Angular application - Can't bind to 'formGroup' since it isn't a known property of 'form' - and managed to resolve it by including the import import { AddEditModule } from './add.edit ...
I am facing an issue with accessing data inside a simple component. Here is the code for my component: <template> <!-- success --> <div class="message-box message-box-success animated fadeIn" id="message-box-success"> <div cl ...
I am currently dealing with 2 entities: project and project_types. Each project can have one or multiple project_types associated with it. Using ajax (ng-init), I am retrieving the project data (including its related project_types) and all available proje ...
I recently developed an Angular app that searches through a database of objects. However, a problem arises with the search filters as they match any part of the string, resulting in irrelevant search results. For example, when searching for the name "Stev ...
I want to set up a page with just one YouTube subscribe button. When a user clicks on the button, a subscription request will be sent to the YouTube channel specified in the code, and the user will be subscribed. If the user is not logged in to Gmail, the ...
My TablePagination is not updating the rows on each page of my table and not even limiting the rows with the row filter. I suspect this may be due to the way I'm building the table using an array mapping like this: 0: [name: Robert, age: 15, ...
I've recently started using ember and have set up a sandbox to experiment with it. An interesting issue arises when I run the ember s command - an error pops up, but here's the strange part: the error only occurs when I have Sublime Text open (!? ...
Can someone please assist me with this issue? Hello there! I'm having trouble running a protractor test as Chrome is only displaying a blank page. The error message indicates that the WebDriver could not be started. ✗ protractor config.js --trou ...
I am currently attempting to monitor addliquidity events in order to extract data on newly added pairs const Web3 = require('web3'); const NODE_URL = "https://mainnet.infura.io/v3/d3c5832256754c85be86b4c97de2d3d3" const web3 = new We ...
I am struggling to comprehend the order of execution in the following code snippet. It is a portion of a larger script, but it all begins with $( "#select-overlay" ). function findSelectedMap(mapID) { $.getJSON('maps.json', function (json) { ...
Attempting to populate the array within my script for future charting with D3.JS, I came across some issues. Following advice from this post, I used a specific syntax that unfortunately resulted in an error stating "Uncaught ReferenceError: WebSite is not ...
My webpage is encountering an issue with Internet Explorer when using AJAX to retrieve data and the .html() function to change the content of a div. While Firefox, Google Chrome, Safari, and Opera work fine, IE 7, 8, and 9 do not respond to the .html() fu ...
I am currently facing an issue with jQuery validation and ajax form processing. My goal is to prevent a page refresh by using ajax, but I am struggling to determine the appropriate placement for the ajax code within the validation function in order to ensu ...
Passport.js typically only allows for username and password in its middleware as default. I am looking to include a third field in Passport.js. Specifically, I require username, email, and password to be utilized in my case. ...
Exploring the possibilities of creating a web application, I stumbled upon AngularJS. With plans to incorporate WCF Service and SQL Server into my project, I am intrigued by what these technologies can offer. I want to ensure that AngularJS aligns with my ...