this.attr_0 = this.attr_1.find(x => x.id === someId);
// .find() works like a foreach loop here,
// it'll look inside of the this.attr_1 (array)
// and return on the condition (x.id === someId)
AngularJS is a structural framework for dynamic web apps.
It lets you use HTML as your template language and lets you
extend HTML's syntax to express your application's components
clearly and succinctly. Angular is a JavaScript Framework which allows you to create reactive
Signle-Page-Applications(SPAs).Angular is a open source Javascript framwork to built frontend application.
we can built a application using Javascript but it would be difficult to maintain , but
using angular its very easy to develop and maintain , because angular provides component based structure
.Angular helps to create SPA application (Single Page Application).