What sets AngularJS's promise then apart from AngularJS's binding?

I'm curious about the difference between these two AngularJS services. Both involve promises and essentially both work.

Method using a self variable:

module.exports = function () {
var self = this,
    data = false;

self.someFunction = function () {
    methodFromAnotherService().then(function (reponse) {
        data = response;
    });
};
};

Method using binding:

module.exports = function () {
var data = false;

this.someFunction = function () {
    methodFromAnotherService().then(function (reponse) {
        data = response;
    }.bind(this));
};
};

The second one only works with binding. I understand that this is related to scope. Please share any useful insights on the major differences.

Answer №1

The concept of a Promise object is utilized for handling deferred and asynchronous tasks in JavaScript. It serves as a representation of an operation that is currently pending completion, but is anticipated to be resolved in the future.

For more information on Promises, visit: https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Promise

In addition, the bind() method is designed to create a new function with a predefined 'this' context when invoked. This allows for setting the value of 'this' within the function along with providing arguments that will be passed before any additional parameters during the function call.

To explore further about the bind() method, check out: https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_objects/Function/bind

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