AngularJS remembers the value and compares it to a previous value. This is basic dirty-checking. If there is a change in value, then it fires the change event. The $apply() method, which is what you call when you are transitioning from a non-AngularJS world into an AngularJS world, calls $digest(). A digest is just plain … Read more
promiseA‘s then function returns a new promise (promiseB) that is immediately resolved after promiseA is resolved, its value is the value of the what is returned from the success function within promiseA. In this case promiseA is resolved with a value – result and then immediately resolves promiseB with the value of result + 1. … Read more
“How does this and $scope work in AngularJS controllers?” Short answer: this When the controller constructor function is called, this is the controller. When a function defined on a $scope object is called, this is the “scope in effect when the function was called”. This may (or may not!) be the $scope that the function … Read more
A simple solution is to have your factory return an object and let your controllers work with a reference to the same object: JS: // declare the app with no dependencies var myApp = angular.module(‘myApp’, []); // Create the factory that share the Fact myApp.factory(‘Fact’, function(){ return { Field: ” }; }); // Two controllers … Read more
From the AngularJS mailing list I got an amazing thread that explains service vs factory vs provider and their injection usage. Compiling the answers: Services Syntax: module.service( ‘serviceName’, function ); Result: When declaring serviceName as an injectable argument you will be provided with an instance of the function. In other words new FunctionYouPassedToService(). Factories Syntax: … Read more
Quick answer: A child scope normally prototypically inherits from its parent scope, but not always. One exception to this rule is a directive with scope: { … } — this creates an “isolate” scope that does not prototypically inherit. This construct is often used when creating a “reusable component” directive. As for the nuances, scope … Read more
1. Don’t design your page, and then change it with DOM manipulations In jQuery, you design a page, and then you make it dynamic. This is because jQuery was designed for augmentation and has grown incredibly from that simple premise. But in AngularJS, you must start from the ground up with your architecture in mind. … Read more