Multisig

question

Directives with no new scope are read-only; they're completely trusted (i.e. internal to the app) and they don't touch jack. Directives with a child scope add functionality, but they are not the only functionality. Lastly, isolate scopes are for directives that are the entire goal; they are standalone, so it's okay (and most "correct") to let them go rogue.

var obj = {1: 11, 2: 22}; var arr = Object.keys(obj).map(function (key) {return obj[key]}); Results in: [11, 22]

21) Explain what is DI (Dependency Injection ) and how an object or function can get a hold of its dependencies ? DI or Dependency Injection is a software design pattern that deals with how code gets hold of its dependencies. In order to retrieve elements of the application which is required to be configured when module gets loaded , the operation “config” uses dependency injection. These are the ways that object uses to hold of its dependencies Typically using the new operator, dependency can be created By referring to a global variable, dependency can be looked up Dependency can be passed into where it is required

$scope is Angular's data storage object