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Instantiate a new Angular module called blog
that takes ui.router
as a dependency.
// Your answer goes here...
One button below has an ng-click
attribute; the other has data-ng-click
instead. What difference does it make?
<button ng-click="vm.create()">Click</button>
<button data-ng-click="vm.create()">Click</button>
Your answer goes here...
Which of the three following options demonstrates the best usage of ng-app
? Explain your answer.
Your answer goes here...
<!DOCTYPE html>
<html data-ng-app="myapp">
<head>
<title>My app</title>
</head>
<body>
<h1><a data-ui-sref="index">My App</a></h1>
<div></div>
</body>
</html>
<!DOCTYPE html>
<html>
<head data-ng-app="myapp">
<title>My app</title>
</head>
<body>
<h1><a data-ui-sref="index">My App</a></h1>
<div></div>
</body>
</html>
<!DOCTYPE html>
<html>
<head>
<title>My app</title>
</head>
<body>
<h1><a data-ui-sref="index">My App</a></h1>
<div data-ng-app="myapp"></div>
</body>
</html>
Imagine an app in which a change to the view updates the model without a page refresh. Similarly, a change to the model updates the view without a page refresh.
Which one of the following concepts does this best illustrate?
[ ] A: Modularity
[ ] B: MVC
[ ] C: Two-way data-binding
[ ] D: Separation of concerns
What is the ui-sref
directive, and how is it used?
Your answer goes here...
Below is an index
controller action that maps to a Post
model in a Rails application. How would you modify it so that it can respond with a list of posts in either HTML or JSON form, depending on the incoming HTTP request?
class PostsController < ApplicationController
def index
@posts = Post.all
end
end
# Your answer goes here...
Let's say the Posts in the previous question are available at http://localhost:3000/posts
. In a front-end application, how could you do the following using AJAX?
1. Retrieve all the posts in JSON form
2. If Step 1 is successful, print the resulting JSON to the console
3. If Step 1 is unsuccessful, print an error message to the console
// Your answer goes here...
Using the same front-end application and Rails API from the previous question, how would you use AJAX to create a Post through the API? You can assume the following...
- The API is RESTful
- The PostsController
contains a strong params method that is used when creating an instance of the Post
model
- Each Post has title
and body
attributes, both of which are strings
If the Post creation is successful, the new Post should be printed to the browser console. Otherwise, an error message should be printed to the console.
// Your answer goes here...